Some constructive criticism:
- You’re three colors over the limit there. Skin shades are tough to make consistent. I use GraphicsGale, which has a Color Replacer feature in which you replace the bottom color with the top color. Does the program you use have anything like that?
- Minimug’s proportions are wrong. Take a 64x64 selection of your mug and resize it to 32x32. Remove the nose and clean up the shading, and there you have it.
- Shirt design is a bit tiny. Maybe remove it?
- Shading on the bandana is hard to see. Blade has a ton of color palettes for hair and other non-skin things, as well as skin.
Remember, practice makes better at the very least. A whole lot of useful tutorials and other things.
Next mug to splice is Geese, by the way.