You've got a fine piece of Flash. *pinch*
I liked the animation and sound very much. All excellently done. My main issue of it was that I found it boring. Nothing I can help. I just don't like that kind of mood/atmosphere. Too simple for my taste. With the complete understanding that you were going for effect with everything you did, and that's commendable, I found the scenes of the pixie walking through the forest to the point where he got onto his sled far too drawn out. The one humorous point in the Flash wasn't enough to break the gnawing pretention that was building up at that point, and, while some people like that stuff, I just don't. A more eventful plot might've solved this.
Feelings about the Flash aside, keep making Flash! You're great at it! I suggest that you add a little more humor than was in Nim's Winter Tale, maybe have a little more of a plot, and maybe throw in a little more Swedish dialogue (;>_> What? It's cool-sounding to me. I don't get to hear it very often.), but I won't for a moment question your skills as a Flash artist. (b^_^)b