Got this working:
Works with all of the accessories too. Here’s a mushroom hat & scarf:
Bunny ears:
Santa hat:
Effectively everything that currently exists, or that I add in later, will be automatically pixel-fied.
Currently slated to arrive in the shop on July 15th, 2024, for 256 coins (+1up if you can guess why!)
I’ve also added it to @bitpixel for free since you suggested it 
Enjoy!
(EDIT: I messed something up on the forum and reset this date to August 2nd for some reason… this was actually posted on October 23rd)