I like this double-exposure style. Nice effect. However, the young man appears to be leaning to his left. Is this the case? or is the camera tilted? IMHO, a slight image rotation counter-clockwise would enhance this photo.
With this guy maybe to have him crouching one knee on the ground one up and his arms crossed across the knee, body turned slightly away and face towards the camera may have relaxed him a bit more? Boys like to be macho LOL.