1. Composition is slightly off, I like where the rider is in the frame, but it could be a little bit tighter.
2. The saturation. Basically, my eyes are on le fire. The trees look like somebody bled out on them, and the greens and reds are just blown the fuck out.
3. Blacks could be a little heavier, but thats just my opinion.
Other than that, it looks like a really cool shot, nice job!