This is pretty good.
The only suggestion I have is making the eyes wide open and bulging to make him look more intense. Maybe some sweat and veins popping out, he looks too chill.
I love it!!! The technique, coloring and the way its almost jumping off the page.
"Hail to the King!!" Bruce Campbell Is very Awesome.
Awesome picture! I have to agree with the comment by sweet21 as there is definitely a layer of details missing from his face.