Its ok, looking good.
This is a sketch rigth? You'll change the shadding?
Hm.. If not, try to blury a litter the eyes and nose.
I dont like much this "sketch" heads.
Try to make soft shadows, sure will look better.
The eyes will not match with the cannibal mask.
The eyes looks like a deformed sad human, or a sad human monster.
You need try to match the head things.