You are doing well Steve, that fur isn't easy to paint really and more with white tones of colur, i ditto a wash sepia as Tommi said, if you will try a silver flash effect on the light parts of the fur , the mixture you have to do is more less a wash of 4 parts of white and one part of silver . The beard is becoming very good , for the face i will add more shadows on the usual shadow areas and light on the upper cheek-bone, that for my liking of course ..