I finally made a new reference sheet for my sona! It has a lot more info about his appearance on it now, so hopefully no more questions will have to be asked. If you still end up using the old ref sheet, that's... fine, I guess. I just would prefer this one be used moving forward, since the design is slightly different from what it was in 2021.

A version without any sort of artifacts or other potential issues can be found in Google Drive.
And, here's a ref sheet for the Koopa Paratroopa form!