I'm only doing his face currently. Who is Vic Rattlehead?
http://en.wikipedia.org/wiki/Vic_Rattlehead

http://i27.tinypic.com/8wfhur.jpg <-- Reference, the skull in the middle being Vic Rattlehead.
I'm aware I didn't use a orange/red pallete, I wasn't sure if I should or shouldn't, aren't bones gray/white?
Any way I can improve on it?