Man, this is a tuff one lol. Since i do not pride myself on being an expert artist of anythang, in my opinion, this iz Amazing! The shading is beautifully done; the face shading came out exceptionally well, love the detail. I'm especially impressed with the backlighting u've done on top of the black shading, very nice. The only little pointers i got this that i think mite look good if u added a touch of additional backlighting apply to the black on the hulk's left arm & leg. Also, i wood like to see a little more color contrast in hulk's pectoral & abdominal muscles, mainly on the creases (make em look a little deeper, just for touches for more beastlyness to the hulk. Haha, can't wait to see how the final version turns out seeing how amazing this version came out!