Nice photo. Filling the frame like this may be too much as it sort of freezes the motion, rather then higlighting it . Perhaps zooming out and leaving some space on the right side or zooming in from a 3/4 angle would have added more motion or life.
The image is nice and sharp and the shot was well timed. However, the combination of the very tight crop, the border and the square format make the subject seem very crowded in the frame, unfortunately.
Well captured action shot, looks like he is riding the frame of the picture. But I think it focus deapth is to deep as the background is clearly visible. A larger aperature would have made the rider pop out more. The tree is also distracting when placed right behind the rider.