All i can say is that the editing needs a little work, (the camera quality could contribute to that), however - you are on the way to being an exceptional skier if you are as young as I think you are.
Don't waste to much time on finding good transitions between clips. The thing you should try to improve is to find some better angle for the camera (such as some follow) and of course, stop shaking with the camera.
thats pretty good, as you get older you'll be able to afford a nicer camera and be able to hack a nice editing program, and your skiing is already good for someone your age...keep it up and you'll be awesome at this stuff