Hey Mc-fleury! It may be because my mind is in bump map mode, but I think you should concentrate on bump mapping the exposed skin of the face more than the color maps. My main reason for saying this being that from pictures I've seen of these apes their skin is very dark and quite shiny and so color variations aren't nearly as obvious as are their wrinkles and facial structure.
Hey mc-fleury, the bump map is definately working well with your model - your gorilla is looking really good, but an area that bothers me is the ear. The top ridge looks a little sharp, but it may be the camera angle.
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