If you're showing these at a higher res its important to try not leaving stray pixels all over the place, like the dark ones on the sword or the two light ones on the pants. HIS left arm is a bit far out from the body, try pulling it in a pixel or pushing his chest out.
You're AAing 45 degree lines, and not the angled lines that need it. Try reading through
Helms ramble thread, basically he outlines that you're main intent is to fake resolution, and straight lines (this includes 45 degree lines, not sure if he mentions it in there though) are "infinite" resolution.
I would generally discourage the random pixel lines in at the top and bottom, but I assume that's all still WIP.
I like the change in style, he's got a ton more character now, his, uh, eyehole could be bigger though.