Keep in mind, these are just my opinion. You could HATE what I have to say, but I think it is worth saying. First off, I personally thought the music was just a little loud. Small tweaking would be great. My second improvement would be the transitions. While transitions are cool, I felt like there were too many different ones in this video. For a compilation like this, it's more satisfying to me for it to be all similar transitions, maybe one or two different ones.
And, finally, the music at the end stopped so abruptly, it caught me off guard. Maybe try fading it out at the end. The video was nice though, just a few minor fixes.