Alright... Here comes the good stuff.
Id recommend u work on the nose, or add a pattern instead of a nose.
and that wear 3 lines thing on the forehead is ruining the style, instead just add a symbol.
the left eye is smaller than the right eye,try to mirror them.and on the face there should be more shading.

The eyes and mouth, atleast in my opinion are too far apart, from the screenshots it looks like his mouth is on his chin and his eyes are too high up.

Other than mapping and the eye being smaller it looks great!

you have to work more on the nose, it looks so flat, the distance of the nose and the mouth are also too far, in my opinion
the yellow color didn't really suits too in my opinion, but the other color selections are pretty much acceptable from my prospective

meanwhile the shading on the sides are really neat, loved those parts
keep up the good work

Probably because I used 1024 x 512 for the resolution, that's why the mapping actually a little bit messed up, thanks tho
Oh and btw, I made the eyes on purpose just like that