SVG Uploading Problem

Hello! I am quite new to using vectors, and I am wishing to implement this image as a sleeve for a hoodie as an .SVG. I am unable to upload this image - what do I need to do to fix it? Many thanks!

Presumably the details are too small for vector graphics.
Here you will find the requirements that vector graphics must fulfil in order to be suitable:

Thank you so much! I have adjusted my design, and I have made some progress! However, I have encountered a new error message - I can use my design on the front/back of the hoodie I am designing, however, not the sleeves. What can I do to adjust this?

I have figured it out! Thank you for your help!