diff --git a/apps/client/src/shared/api/external/index.ts b/apps/client/src/shared/api/external/index.ts
index 3f844551..5b1a91e9 100644
--- a/apps/client/src/shared/api/external/index.ts
+++ b/apps/client/src/shared/api/external/index.ts
@@ -2,6 +2,8 @@ import mime from 'mime';
 
 import axios from 'axios';
 
+import { getFileKey } from '@/shared/util/file';
+
 export const putUploadToS3 = async (presignedUrl: string, file: File) => {
   const contentType = mime.getType(file.name) || 'application/octet-stream';
 
@@ -15,6 +17,6 @@ export const putUploadToS3 = async (presignedUrl: string, file: File) => {
     // Presigned URL에서 쿼리 문자열을 제거하여 파일 URL을 생성
     const uploadedFileUrl = presignedUrl.split('?')[0];
 
-    return uploadedFileUrl;
+    return getFileKey(uploadedFileUrl);
   }
 };
diff --git a/apps/client/src/shared/api/file/type.ts b/apps/client/src/shared/api/file/type.ts
index db1cbebf..90d90bfc 100644
--- a/apps/client/src/shared/api/file/type.ts
+++ b/apps/client/src/shared/api/file/type.ts
@@ -1,3 +1,3 @@
 export interface DeleteFile {
-  fileName: string;
+  fileKey: string;
 }
diff --git a/apps/client/src/shared/api/file/upload/index.ts b/apps/client/src/shared/api/file/upload/index.ts
index a137f5a0..403635bf 100644
--- a/apps/client/src/shared/api/file/upload/index.ts
+++ b/apps/client/src/shared/api/file/upload/index.ts
@@ -1,10 +1,14 @@
+import { paths } from '@/shared/__generated__/schema';
 import { axiosInstance } from '@/shared/api/instance';
 
+type ImageFile = paths['/api/v1/file/upload']['get']['responses']['200']['content']['*/*'];
+
 export const getFile = async (fileFormat: string) => {
-  const response = await axiosInstance.get('/file/upload', {
+  const response = await axiosInstance.get<ImageFile>('/file/upload', {
     params: {
       fileFormat: fileFormat,
     },
   });
+
   return response.data.data;
 };
diff --git a/apps/client/src/shared/component/Modal/Footer/ModalFooter.tsx b/apps/client/src/shared/component/Modal/Footer/ModalFooter.tsx
index ac8c9c7a..5e60ff3a 100644
--- a/apps/client/src/shared/component/Modal/Footer/ModalFooter.tsx
+++ b/apps/client/src/shared/component/Modal/Footer/ModalFooter.tsx
@@ -52,10 +52,13 @@ const ModalFooterButtons = (
 
   switch (type) {
     case 'create-workspace':
-      return [
-        step >= 3 ? createButton('건너뛰기', onClick, 'outline') : null,
-        createButton(step === 5 ? '확인' : '다음으로', onClick, 'primary', disabled),
-      ].filter(Boolean) as FooterButton[];
+      if (step === 1) {
+        return [createButton('다음', onClick, 'primary', disabled)];
+      }
+      if (step === 2 || step === 3) {
+        return [createButton('이전', onPrev, 'outline'), createButton('다음', onClick, 'primary', disabled)];
+      }
+      return [createButton('확인', onClick, 'primary')];
 
     case 'create-block':
       if (step === 1) {
diff --git a/apps/client/src/shared/component/WorkSpaceModal/category/WorkSpaceCategory.tsx b/apps/client/src/shared/component/WorkSpaceModal/category/WorkSpaceCategory.tsx
index 5eb836e2..c80204d3 100644
--- a/apps/client/src/shared/component/WorkSpaceModal/category/WorkSpaceCategory.tsx
+++ b/apps/client/src/shared/component/WorkSpaceModal/category/WorkSpaceCategory.tsx
@@ -12,7 +12,7 @@ type Category = components['schemas']['TeamCreateRequest']['category'];
 
 const WorkSpaceCategory = () => {
   const { setFormData } = useWorkSpaceContext();
-  const { nextStep } = useFunnel();
+  const { prevStep, nextStep } = useFunnel();
 
   const [selected, setSelected] = useState('');
 
@@ -49,7 +49,7 @@ const WorkSpaceCategory = () => {
           className="select-container"
         />
       </Modal.Body>
-      <Modal.Footer step={2} type="create-workspace" onClick={handleNext} disabled={isDisabled} />
+      <Modal.Footer step={2} type="create-workspace" onClick={handleNext} onPrev={prevStep} disabled={isDisabled} />
     </>
   );
 };
diff --git a/apps/client/src/shared/component/WorkSpaceModal/complete/WorkSpaceComplete.tsx b/apps/client/src/shared/component/WorkSpaceModal/complete/WorkSpaceComplete.tsx
index c85a492b..43a94f37 100644
--- a/apps/client/src/shared/component/WorkSpaceModal/complete/WorkSpaceComplete.tsx
+++ b/apps/client/src/shared/component/WorkSpaceModal/complete/WorkSpaceComplete.tsx
@@ -1,19 +1,17 @@
 import { useQueryClient } from '@tanstack/react-query';
 
-import completePng from '@/common/asset/img/workspace_complete.png';
-import complete from '@/common/asset/img/workspace_complete.webp';
-
 import { $api } from '@/shared/api/client';
 import { Modal } from '@/shared/component/Modal';
+import { IMAGE_PLACEHOLDER } from '@/shared/constant';
 import { useWorkSpaceContext } from '@/shared/hook/common/useWorkSpaceContext';
 import { useCloseModal } from '@/shared/store/modal';
 
 const WorkSpaceComplete = () => {
-  const queryClient = useQueryClient();
-
   const closeModal = useCloseModal();
 
   const { formData } = useWorkSpaceContext();
+
+  const queryClient = useQueryClient();
   const { mutate: postTeamMutate } = $api.useMutation('post', '/api/v1/teams');
 
   const handleSave = () => {
@@ -22,14 +20,12 @@ const WorkSpaceComplete = () => {
         body: {
           name: formData.name,
           category: formData.category,
-          iconImageKey: formData.fileUrlData,
+          iconImageKey: formData.fileKey,
         },
       },
       {
         onSuccess: () => {
-          queryClient.invalidateQueries({
-            queryKey: ['get', '/api/v1/members/teams'],
-          });
+          queryClient.invalidateQueries({ queryKey: ['get', '/api/v1/members/teams'] });
 
           closeModal();
         },
@@ -42,17 +38,15 @@ const WorkSpaceComplete = () => {
       <Modal.Header step={4} totalSteps={4} />
       <Modal.Body>
         <div css={{ width: '100%', paddingTop: '2rem' }}>
-          <picture>
-            <source srcSet={complete} />
-            <img
-              css={{ width: '30rem', height: '30rem', objectFit: 'cover' }}
-              src={completePng}
-              alt="워크 스페이스 생성 완료"
-            />
-          </picture>
+          <img
+            css={{ width: '33.6rem', height: '33.8rem', objectFit: 'cover' }}
+            src={formData.fileUrl}
+            onError={(e) => (e.currentTarget.src = IMAGE_PLACEHOLDER)}
+            alt="워크 스페이스 생성 완료"
+          />
         </div>
       </Modal.Body>
-      <Modal.Footer step={1} type="create-workspace" onClick={handleSave} disabled={false} />
+      <Modal.Footer step={4} type="create-workspace" onClick={handleSave} disabled={false} />
     </>
   );
 };
diff --git a/apps/client/src/shared/component/WorkSpaceModal/hook/common/useImageUpload.tsx b/apps/client/src/shared/component/WorkSpaceModal/hook/common/useImageUpload.tsx
index e502c3ec..2ef50a73 100644
--- a/apps/client/src/shared/component/WorkSpaceModal/hook/common/useImageUpload.tsx
+++ b/apps/client/src/shared/component/WorkSpaceModal/hook/common/useImageUpload.tsx
@@ -3,35 +3,39 @@ import { useRef, useState } from 'react';
 import { $api } from '@/shared/api/client';
 import { usePutUploadMutation } from '@/shared/component/TimeBlockModal/hook/api/usePutUploadMutation';
 import { useWorkSpaceContext } from '@/shared/hook/common/useWorkSpaceContext';
-import { extractFileExtension, getFileKey } from '@/shared/util/file';
+import { extractFileExtension } from '@/shared/util/file';
 
 const useImageUpload = () => {
-  const [fileURL, setFileURL] = useState<string>('');
-  const imgUploadInput = useRef<HTMLInputElement | null>(null);
+  const [fileURL, setFileURL] = useState('');
   const [file, setFile] = useState<File | null>(null);
 
+  const imgUploadInput = useRef<HTMLInputElement | null>(null);
   const fileExtension = file ? extractFileExtension(file.name) : '';
 
   const { mutate: uploadToS3Mutate } = usePutUploadMutation();
   const { mutate: deleteFileMutate } = $api.useMutation('post', '/api/v1/file');
-  const { data: fileData, refetch: refetchFileData } = $api.useQuery('get', '/api/v1/file/upload', {
-    params: { query: { fileFormat: fileExtension }, options: { enabled: !!file } },
+  const { data: fileData } = $api.useQuery('get', '/api/v1/file/upload', {
+    params: { query: { fileFormat: fileExtension } },
   });
 
   const { setFormData } = useWorkSpaceContext();
 
-  const handleFileUpload = (selectedFile: File, presignedUrl: string) => {
-    const newFileURL = URL.createObjectURL(selectedFile);
+  const handleFileUpload = (fileData: File, presignedUrl: string) => {
+    const newFileURL = URL.createObjectURL(fileData);
     setFileURL(newFileURL);
+
     uploadToS3Mutate(
-      { presignedUrl, file: selectedFile },
+      { presignedUrl, file: fileData },
       {
-        onSuccess: (uploadedFileUrl) => {
-          URL.revokeObjectURL(newFileURL);
-          if (uploadedFileUrl) {
-            setFileURL(uploadedFileUrl);
-            setFormData({ fileUrlData: uploadedFileUrl });
+        onSuccess: (response) => {
+          if (response) {
+            setFormData({ fileKey: response });
           }
+          URL.revokeObjectURL(newFileURL);
+        },
+        onError: (error) => {
+          console.error(error);
+          setFormData({ fileKey: '' });
         },
       }
     );
@@ -39,37 +43,36 @@ const useImageUpload = () => {
 
   const handleImageChange = async (event: React.ChangeEvent<HTMLInputElement>) => {
     const selectedFile = event.target.files?.[0];
-    if (selectedFile) {
-      setFileURL(URL.createObjectURL(selectedFile));
-      setFile(selectedFile);
-      setFormData({ fileUrlData: '' });
-
-      const { data } = await refetchFileData();
-      if (data?.data?.url) {
-        handleFileUpload(selectedFile, data.data.url);
-      }
+    if (!selectedFile) return;
+
+    setFile(selectedFile);
+    setFileURL(URL.createObjectURL(selectedFile));
+    setFormData({ fileKey: '', fileUrl: fileData?.data?.url });
+
+    if (fileData?.data?.url) {
+      handleFileUpload(selectedFile, fileData?.data?.url);
     }
   };
 
   const handleImageRemove = () => {
-    if (fileData?.data?.fileKey) {
-      deleteFileMutate(
-        {
-          body: { fileKey: getFileKey(fileURL) },
+    if (!fileData?.data?.fileKey) return;
+
+    deleteFileMutate(
+      { body: { fileKey: fileData.data.fileKey } },
+      {
+        onSuccess: () => {
+          URL.revokeObjectURL(fileURL);
+
+          setFileURL('');
+          setFile(null);
+          setFormData({ fileKey: '', fileUrl: '' });
+
+          if (imgUploadInput.current) {
+            imgUploadInput.current.value = '';
+          }
         },
-        {
-          onSuccess: () => {
-            URL.revokeObjectURL(fileURL);
-            setFileURL('');
-            setFile(null);
-            setFormData({ fileUrlData: '' });
-            if (imgUploadInput.current) {
-              imgUploadInput.current.value = '';
-            }
-          },
-        }
-      );
-    }
+      }
+    );
   };
 
   return {
diff --git a/apps/client/src/shared/component/WorkSpaceModal/image/WorkSpaceImage.tsx b/apps/client/src/shared/component/WorkSpaceModal/image/WorkSpaceImage.tsx
index 51c4c7bc..2ea2d285 100644
--- a/apps/client/src/shared/component/WorkSpaceModal/image/WorkSpaceImage.tsx
+++ b/apps/client/src/shared/component/WorkSpaceModal/image/WorkSpaceImage.tsx
@@ -8,14 +8,13 @@ import {
   imageBoxStyle,
   imageDeleteStyle,
 } from '@/shared/component/WorkSpaceModal/image/WorkSpaceImage.style';
+import { IMAGE_PLACEHOLDER } from '@/shared/constant';
 import { useFunnel } from '@/shared/hook/common/useFunnel';
 
 const WorkSpaceImage = () => {
   const { fileURL, imgUploadInput, handleImageChange, handleImageRemove } = useImageUpload();
 
-  const { nextStep } = useFunnel();
-
-  const isDisabled = !fileURL;
+  const { prevStep, nextStep } = useFunnel();
 
   return (
     <>
@@ -24,7 +23,12 @@ const WorkSpaceImage = () => {
         <Flex styles={{ width: '100%', paddingTop: '2rem', justify: 'center' }}>
           <div css={[{ cursor: 'pointer' }, imageBoxStyle]}>
             {fileURL ? (
-              <img src={fileURL} alt="프로필 이미지" css={imageAddStyle} />
+              <img
+                src={fileURL}
+                alt="프로필 이미지"
+                css={imageAddStyle}
+                onError={(e) => (e.currentTarget.src = IMAGE_PLACEHOLDER)}
+              />
             ) : (
               <Label id="imgUploadInput" css={imageAddStyle}>
                 <IcTeamProfileAdd width={200} height={200} />
@@ -42,7 +46,7 @@ const WorkSpaceImage = () => {
           />
         </Flex>
       </Modal.Body>
-      <Modal.Footer step={3} type="create-workspace" onClick={() => nextStep()} disabled={isDisabled} />
+      <Modal.Footer step={3} type="create-workspace" onPrev={prevStep} onClick={() => nextStep()} disabled={false} />
     </>
   );
 };
diff --git a/apps/client/src/shared/component/WorkSpaceModal/name/WorkSpaceName.tsx b/apps/client/src/shared/component/WorkSpaceModal/name/WorkSpaceName.tsx
index 5d71af57..0b5b5079 100644
--- a/apps/client/src/shared/component/WorkSpaceModal/name/WorkSpaceName.tsx
+++ b/apps/client/src/shared/component/WorkSpaceModal/name/WorkSpaceName.tsx
@@ -4,22 +4,24 @@ import { useState } from 'react';
 
 import { Modal } from '@/shared/component/Modal';
 import { inputWrapperStyle } from '@/shared/component/WorkSpaceModal/name/WorkSpaceName.style';
+import { MAX_TEAM_NAME, WORKSPACE_MODAL } from '@/shared/constant';
 import { useFunnel } from '@/shared/hook/common/useFunnel';
 import { useWorkSpaceContext } from '@/shared/hook/common/useWorkSpaceContext';
 
 const WorkSpaceName = () => {
-  const [inputValue, setInputValue] = useState('');
-
-  const { setFormData } = useWorkSpaceContext();
+  const { formData, setFormData } = useWorkSpaceContext();
   const { nextStep } = useFunnel();
 
+  const [inputValue, setInputValue] = useState(formData.name);
+
+  const isDisabled = inputValue.trim().length === 0;
+  const isNameLengthError = inputValue.length > MAX_TEAM_NAME;
+
   const handleNext = () => {
     setFormData({ name: inputValue });
     nextStep();
   };
 
-  const isDisabled = inputValue.trim().length === 0;
-
   const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     setInputValue(e.target.value);
   };
@@ -32,6 +34,9 @@ const WorkSpaceName = () => {
             placeholder="팀, 동아리, 조직 이름 입력"
             value={inputValue}
             onChange={handleInputChange}
+            isError={isNameLengthError}
+            supportingText={isNameLengthError ? WORKSPACE_MODAL.NAME : ''}
+            maxLength={MAX_TEAM_NAME}
             css={inputWrapperStyle}
           />
         </div>
diff --git a/apps/client/src/shared/constant/index.ts b/apps/client/src/shared/constant/index.ts
index d845e411..12ae1354 100644
--- a/apps/client/src/shared/constant/index.ts
+++ b/apps/client/src/shared/constant/index.ts
@@ -111,4 +111,12 @@ export const IMAGE_MODAL = {
 
 export const MAX_TEAM_COUNT = 8;
 
+export const MAX_TEAM_NAME = 30;
+
+export const WORKSPACE_MODAL = {
+  NAME: '워크스페이스명은 30자까지 작성 가능해요',
+};
+
+export const IMAGE_PLACEHOLDER = 'https://github.com/user-attachments/assets/7f97f986-6dc8-4900-9f53-3a2900565345';
+
 export const SEARCH_DELAY = 400;
diff --git a/apps/client/src/shared/constant/modal.tsx b/apps/client/src/shared/constant/modal.tsx
index ec2d0b6f..8237124e 100644
--- a/apps/client/src/shared/constant/modal.tsx
+++ b/apps/client/src/shared/constant/modal.tsx
@@ -44,8 +44,8 @@ export const MODAL_CONTENTS: Record<ModalContentType, ModalContent> = {
           ) : (
             <span>{`${step}/${totalSteps}`}</span>
           ),
-        title: '워크스페이스 이름 입력',
-        infoText: '워크스페이스 이름을 입력해주세요.',
+        title: '새로운 워크스페이스 생성하기',
+        infoText: '워크스페이스의 이름을 입력해주세요',
       },
       {
         icon: (step: number, totalSteps: number) =>
@@ -54,8 +54,8 @@ export const MODAL_CONTENTS: Record<ModalContentType, ModalContent> = {
           ) : (
             <span>{`${step}/${totalSteps}`}</span>
           ),
-        title: '카테고리 선택',
-        infoText: '카테고리를 선택해주세요.',
+        title: '새로운 워크스페이스 생성하기',
+        infoText: '팀 카테고리를 선택해주세요',
       },
       {
         icon: (step: number, totalSteps: number) =>
@@ -64,8 +64,8 @@ export const MODAL_CONTENTS: Record<ModalContentType, ModalContent> = {
           ) : (
             <span>{`${step}/${totalSteps}`}</span>
           ),
-        title: '프로필 이미지 등록',
-        infoText: '프로필 이미지를 등록해주세요.',
+        title: '동아리 프로필 이미지 등록',
+        infoText: '우리 동아리 프로필에 표시할 이미지를 등록해주세요',
       },
       {
         icon: (step: number, totalSteps: number) =>
@@ -74,8 +74,8 @@ export const MODAL_CONTENTS: Record<ModalContentType, ModalContent> = {
           ) : (
             <span>{`${step}/${totalSteps}`}</span>
           ),
-        title: '완료',
-        infoText: '워크스페이스 생성이 완료되었습니다.',
+        title: '워크스페이스 생성완료',
+        infoText: '이제 워크스페이스를 사용할 수 있습니다.',
       },
     ],
     buttons: [
diff --git a/apps/client/src/shared/hook/common/useWorkSpaceContext.tsx b/apps/client/src/shared/hook/common/useWorkSpaceContext.tsx
index db251404..353abb6f 100644
--- a/apps/client/src/shared/hook/common/useWorkSpaceContext.tsx
+++ b/apps/client/src/shared/hook/common/useWorkSpaceContext.tsx
@@ -14,7 +14,8 @@ interface WorkSpaceFormData {
     | '종교'
     | '국제교류'
     | '네트워킹';
-  fileUrlData: string;
+  fileKey: string;
+  fileUrl: string;
 }
 
 interface WorkSpaceContextType {
@@ -37,7 +38,8 @@ export const WorkSpaceProvider = ({ children }: { children: ReactNode }) => {
   const [formData, setFormDataState] = useState<WorkSpaceFormData>({
     name: '',
     category: '전체',
-    fileUrlData: '',
+    fileKey: '',
+    fileUrl: '',
   });
 
   const setFormData = useCallback((data: Partial<WorkSpaceFormData>) => {
@@ -48,7 +50,8 @@ export const WorkSpaceProvider = ({ children }: { children: ReactNode }) => {
     setFormDataState({
       name: '',
       category: '전체',
-      fileUrlData: '',
+      fileKey: '',
+      fileUrl: '',
     });
   }, []);