I agree with Tuna; the back looks like it could use something protruding from it to add more balance.
Otherwise, looking dandy. Keep it up!
if i could think of something to put on the back there would be something there already
nothing i can think of looks like anything at all
unless i can give him a giant tumor that just so happens to be visible at the angle he's at, ive got no ideas
i dunno, spikes, tentacles, loose wires, a little hunchback who rides around with him