what are you shooting with?
1 is pretty good, nothing really stands out to me
2 it seems like you are focussing more on the foreground than the skier, the framing of the flag and the trees is kind of nice, but by focussing on the foreground the detail of the snow and the flag is kind of distracting
3 isn't anything special for me, i'm not really a fan of the angle, try moving around a little more and capturing more skier
4 is cool, but i don't think you need that big blank space on the right, maybe try cropping that in a little
good stuff though, keep shooting