I'd like to see this cropped lower to see the rest of his arm & the entire tattoo. The black shirt blends in too well with the background. A dark grey would look better & still keep the dark look of the photo.
At first quick glance it looked as if his head was floating because his black shirt blends so well with the black background. Funny expression though. :)
Its funny pose, at first I thought his head was seperated from his body because his shirt blends into the background. If he is flexing his muscle then I think we should see more of it in the picture.
His fist looks green and his face very red. The light on the back of his neck is distracting. With this being advanced editing, a little more time could have been spent in post editing to make this a better shot.