Its good! Please don't be lazy...
-Make a pale- very pale blue linear background layer for sky scenes. It would look SO much better.
-Put in very faint sounds as well, leaving the music to dominate.
-put streaks in the snow behind him.
-Consider maybe showing a moment of emotion- eye widening, in a closup on his face just before he hits the tree. Possibly a few other close-up moments of narrowing of eyes as he does somthing particularly skilful.
-I think the perspective/movement may be faulty in one scene where the background mountains move relative to the foreground mountains- I could be wrong but it didn't look right to me.
this could be a TOP class flash.
Best wishes,
IceDragon64 of the Dragons & Spirits