I am impressed by the way his head, torso & hood rotate just the right degree as he strides. And I like the 1-pixel bounce of his hair. And I like John, of course!
Actually, bugger to what I said about the left hand. I AM FICKLE.
His left hand would be better off shaded like the rest of the arm; that sort of detail would only work if the entire piece were loads more detailed, but you took the minimalistic route, so it's best you stay faithful to it. Either way, it's a pleasing animation; eveything looks to be doing what it's supposed to be, and I look forward to seeing where you take the final product. c:
Slick animation!