2 things really stood out with me:
1. In the first line shots you increase the speed in between hits. Though this is totally acceptable.. you want to incorporate this with the music as much as possible. If not it appears really unnatural. Also, it is at a slightly awkward speed. If you are going to speed it up make it slightly more abrupt. By making this faster it kind of turns it more into a transition synced with music than an obvious way to speed through the skiing section.
2. In the jump section you cut the audio in and out. I would just keep it out. Though the sound of a stomp is nice I mostly just hear the wind when you bring it in. Leave it silent and it is fine!
Hope that helps!