The head/shoulder/arm area is so bizarre here. I do like the boldness of shadow. Shadows are cool because of bizarre effects that the black outline lend itself to.
nice crisp outline, which as far as i can tell is extremely difficult to attain. you have left an awkward amount of space at the top, perhaps to simulate falling. would have liked to see all four limbs, as this current pose looks like you're holding the camera, which takes away from it a bit for me.