That was actually pretty good for being filmed entirely on (I think) a GoPro. Kind of awkward mixing the time lapses and skiing like that, might have been better to keep them separate or focus more on skiing. Timelapses work as fill for skiing but skiing does not work as fill for timelapses is what I think I'm getting at
in all seriousness the time lapses, etc. look really nice. i understand this is just a demo reel to show off that stuff, but if it were a serious ski edit i'd ease up on the lapses and throw in more skiing. also, definitely get closer with your camera. it'll feel like you're cutting them off but that's just when it's perfect.