won't let me upload cape designs

[Dreamer-Zero]

Describe the bug
Some cape images won't upload but friends can upload the same cape image with no issue. i keep being told its "not a valid cape design" and had my friend try it and he could upload the same image without an issue.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
I expected to be able to upload a cape that had my design on it to wear

Screenshots
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Setup (please complete the following information):

• OS: Windows 11
• Minecraft Version Java
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[eyezahhhh]

Post your Minecraft username and link the cape file that you're having trouble uploading