I agree with Rob in the sense of the motion blur. It's hard to see what is going to happen next. When it comes to cropping, I like the empty space on the left side, but would have cropped it right were the concrete slant tends to disappear, so it doesn't really show the source of lighting, even though you can tell by the shadows. With the vertical cropping, I'm do see where mysteryscribe is coming from, but I think there would be the same, or even more, empty space above him rather than beside him. Telling by his stance, His left leg is probably his lead lead which would insinuate regular stance. I would also have to second what Rob said when I say I would to se the subject slightly larger.