Now I se what you mean. You may be right, I'll make some experiments to see what I can do about it without losing the cartoonish style. Thank you for making me notice it :)

Yes, but the way you have it makes the cheek have a big flat spot on it. I am not a very good pixel artist, but I made a quick bad edit to show how I think it should be shaded: http://i.imgur.com/bGg6os0.png Not the best edit, but you get the idea.

 Sure thing, go on! :)

 Really really cool man, can I use some colors from your pixel art? I cannot find good skin colors.

 Beveled you say? The light comes from the left, so the left part of the cheek is highlighted, and the rear part is shadowed. Isn't that right?

I like it overall, but the cheek seems beveled.