He's not snowboarding, he's sitting down!!! Look at the shadows, how is he 'floating'??. If he isn't sitting down then he's carving a huge trench with his arse that close to the ground.
I didn't go for a solid shadow, BTW, because that looked too similar to everyone else's stuff. This isn't exactly a vector, anyway. I used the polugonal lasso rather than the pen tool, and i did it in Photoshop. Feels more controlled and less cluttered, IMO.