Ok, this angle is more informative. I hope you don't mind me painting over your screenshot. These may or may not work but I'd definitely try them: EDIT: Also, check out this skull to see what may be wrong with your cheekbones:
If we could see some side reference that would be great; the neck and the harsh edges that flows where the head and neck connects seems very wierd; I'm hazarding a guess that it doesn't show up on that particular model either, and would (unless your reference says otherwise) smooth it out to get rid of that harsh edge. You…