The head.
I love itThe mapping is great, so yeah, with the shading it looks awesome. Good job man, I am wondering how the top looks since there is just white on the top, so it probably just looks like a white circle at the top of the head if 'm correct.
The mapping is good,
the shade is strange and it is looking cartoony.
work more on shading,
and put more effort on the design of your heads.
The shading on the purple area is really off, but other than that it seems pretty good.