Watch your erasing tool on the skater's left elbow (the red one).. it's very choppy (I do it all the time when I don't have the magnification set high enough). I'm only mentioning it because the source photo has such a nice elbow that has disappeared. No big whoop.. I really enjoy the motion feel, I want to get my toes out of the way
It may not matter due to the "Blur" effect you added, but it kind of feels like his elbow and part of his butt are missing and not traveling.. but what do I know? hehe.. great Idea and nice finish. Good Luck author