Head is too big, brolly's head was really small compared to his torso.
The arms are too short, allthough they may not look like it, you'll see when you have to animate him.
The hair kind of resembles me of dreadlocks, try to put more hairgel in it =] The spikes are supposed to be standing up straigh with a minor curve. (unless this is for animation purposes)
There's a strange blend in the shoulders and the chest, it somehow connects 2 muscles.
The biceps are attached to the torso, check your own biceps to get them right.