Look at your shaders as well... The skin texture is kind of flat right now. It all depends justhow far down the photorealistic route you want to go. Posing the character is only the beginning - the facial expression, lighting, materials... in fact, EVERY single part of the scene has to be worked at in great depth and tweaked to within an inch of its life in order to get the maxuimum verisimitude out of it, if you want to go the whole way.

JonTheCelt