Hey Baz, heres a pic of my current wip im doin here at work for fun. the areas highlighted in red are the zigomathic structure that separates the fat and skin areas of the check responsable for the laughter and the bones. I believe its important to have very distinct areas of skin, muscle fat and bones in the face so u can manipulate them better when creating your morphs set or ur bones deformation.. thats it. cheers mate loggie