This is a terrific drawing (one of the hand needs a little more work).Body and head are excellent.Try this method that i'm doing presently-you should buy a stump or smudger at the art store.I find that it distribute the graphite very evenly.Spray workable fixative on it,then applied a darker layer of graphite and again use the the smudger.Spray,Then a darker layer and keep build until the rendering is somewhat finish(make sure to use the stump or smudger..i don't know the proper name..anyway they are easy to find).Then you should ink it with Copic markers.You can match marker to the graphite tone that you have shaded or rendered.Inking your drawing with this unique marker gives your drawing a fantastic effect.