Not looking too closely, but I think you nailed Shawn's style - totally thought it was him when I was on the front page.
The only thing that doesn't seem Shawn-like to me is the foldign on the shirt. I think he'd use larger blocks of shadow rather than just thin lines indicating the fols themself. But that's a minor thing, I really like it.
Really solid pixeling and nice detail, but I don't get the pose. Are his arms a bit short?
@Solarlune The left hand is facing back, looking at it now it seems a bit awkward.
@Ego Yeah, I should be thinking in bigger clusters to match his style closer. I'll have to try that on the next one.