#1: Pretty good from a technical standpoint, but the composition could use some work. There's a whole lot of dead space, and combined with the centered composition you end up with a pretty static photo. His shadow and whatever that thing is on the snow are just as interesting to me as the skier. Overall, it could just benefit from a tighter composition.
#2: Again, a whole lot of dead space that isn't really contributing to the photo at all. The distortion at the end of the rail and the super blue snow are also bugging the shit out of me. Use a longer lens or get closer, a wide angle isn't really beneficial if it takes the viewer away from the subject. The saturation is also pretty ehhhhhhhh.
#3: Nice tones, but shot way way way way too wide. There's a lot of motion and lines going across the frame, but for some reason you have a whooooole lot of sky...it looks neat, but it completely dominates the skier. I'm a lot more drawn to the huge white sun and the tracks going across the jump than the skier.
#4: The color balance in the snow is off on this one too, and I'm feeling a lot more going on near the right edge than the left one. The colors of the skier and the ladder go together nicely, but they also become pretty insignificant with the dead zone that occupies over half of the photo.
#5: The shadow on the snow and the slight detail of the branches behind him are great, nice job on this one. But once again, I'm not really sure what you're trying to do with all the space on the right...I see the outline of a branch, but nothing really interesting. Also, is that the flash you left in right in front of him (wtf)?
So....overall, you mainly need to work on composition. You seem to like a lot of dead space in your photos, but you really need to learn how to use it to your advantage. And I know shooting super wide is the cool thing to do right now, but having a ton of distortion doesn't automatically make a photo good--use wide lenses in a way that is beneficial, they aren't working that well in these photos. Your B&W work is definitely way stronger than your color stuff, but color is something that is easy to work with in your favor when you're shooting in an environment that only has a few major colors in it.
This is coming from someone who does not shoot 35mm or any action stuff, so take it for what it's worth.