For a follow cam, try to ski in-front of the skier but going switch.
Other than that, just traditional side by side, or a tiny bit in back of him. (note: do not go to far back of the skier, the shot just looks out of place and you cant see the skier as well).
Use a tripod, they can add a great variety of angles to use.
Try to be creative. Some of the best edits I've seen have such great and new angles.