All Fired Up!
Previous contributor and all around artistic talent Kyu Shim sent in another excellent submission -- this time of a beautifully rendered chiaroscuro Iron Man! I've dug Kyu's work since back in the day, when we were buddies in art school. His painting background is quite evident in this drawing, with its excellent light-sourcing and modelling of forms.
Take a bow, Kyu -- this one's a beauty!