ouch your legendary pen skills aren't as great as your coloring's. the coloring on the axe have blurry spots of black, and white, try putting it one whole using smudge if possible, it's a great tool when you have such holes. i find his brown hairy robe not enough shaded and not too interesting.
well, you get the portrait basicly, all i can say is that you gotta raise your coloring skills to have an equal scale with your amazing pen skills.