I uploaded a couple of my personal creations and they just didn't seem to fit right. I especially noticed the difference on the collar and sleeve piping. It would appear that using a template with curve on the sleeve results in the game rendering it as sloping down outside of the sleeve, if that makes any sense. Going to try and screenshot.
EDIT: added screenshot, this jersey file was used in 22
I see how my patches were far oversized, I can fix that, but not sure how to fix the collars or the slope of the sleeve piping down and off of the sleeve.