The original art was 5 colours I changed it to 4 colours in Bambu Studio so that you can print it with a single AMS and it turned out quite well.
I have added the original 5 colour version in the raw files section ( Click Download STL and download Cat Face Blue.3mf ) which can be printed if you have multiple AMS units.
It prints face down and there are 3 layers for the art for minimal filament changes.
It is to big for a keyring / keychain and I don't think it will print as well if it is scaled down. If you have a 0.2mm nozzle you may be able to get away with scaling it down, do not scale the z axis.
Powered by Image to Keychain from MakerWorld (https://makerworld.com/makerlab/imageToKeychain)