Looks great so far. Very nice rendering.
For print reasons, be careful of those shadow tones and hot spots.
Up under the cap in the face and the hot spots on the side of face and arm.
They can fill in quick and the hot spots can lose highlight dots easily.
When rendering, I like to squint my eyes every now and then. It seems to help me pick up on those areas.
Just some thoughts from the outside looking in. I know after a while of being so deep into a job it's good to get some fresh eyes on it.