And for the head:
1. There is some kind of seam going through the middle, make sure the subsurf comes after the mirror. If you don’t, the subsurf will smooth one half and the outside edges will curl outwards a bit. When it’s mirrored, that will look weird.
2. There seem to be some faces behind the ear which are really unnecesary, you should remove those.
3. The proportions aren’t completely correct, it helps to study anatomy, even for cartoonish characters.
Good luck 🙂
