Cool man, looks good. I might go back in and pick out some of those sculpted details (scars, elbow wrinkles, veins) with another highlight. I think it would make things really pop more.
Honestly lee David I feel this way .. I love the model as is it depends in what style your going for realistic vs comic book/cartoon. Yeah alot will say do this or that to pop more and if you go all the way up till white it def makes a statement. But than your getting into an exaggerated pop which in my opinion can detract from the realistic style which is subtlety so you gotta find that middle ground in which I feel you have. It's wonderfully painted. Try a white back ground and see the difference . I think it's awesome. 8.3-8.7