Two suggestions here.I would set the bg pic on possibly darken or something, it sticks out too much.And part of the BG is way over contrasted next to his arm on the right.
not bad but the render looks choppy or oversharpened, the effect is a bit overdone, the bg pic doesn't blend in well enough, take off the black bar in the right or maybe lower the opacity of it, change up the text once in awhile, other than that its nice