graph TD A[Receive 9 URLs of composed birthday card designs] --> B[Initialize empty list for upscaled image URLs] B --> C{For each URL in input list} C -->|URL| D[Call Task 58: Resize image] D -->|Upscaled image URL| E[Call Task 9: Save content to server] E -->|Saved upscaled image URL| F[Append URL to list] F --> C C -->|No more URLs| G[Return list of 9 upscaled image URLs]