What can I say?
I love Haytham and this drawing is a nice tribute to him.
It's something virtuos here that I'm trying to explane but it's quite obvious: the pose is dynamic and the body anatomically fair enough to make an idea of the space and his moves, as the lines and the folds do.
The artist (you! ) captured as well his expression and that's one of the MOST correct Haytham's hats I've ever seen, around here!
I've something to say about the background. The idea is great: broken simbol-Assassins' traitor, I love it, but you could had work harder on it, because it's too simple, poor.
Also the colors (some kind of gray scale, maybe you wanted that) but make it too much dreary, I say.
But in the end, the first impact is important asl well. I've noticed immediately your art and this is a great point.
Keep going this way!