Something big to consider when you set clips to music, do the visuals match the mood/atmosphere of the music?
Thought you did decently well in this respect
Some of the places you decided to cut away to another clip looked fine, but others seemed random (with respect to the music); it's always simple to cut away at the end of an 8-count, or even on the after 4. (Honestly this is just me being nit-picky about how well visuals match the music--I like to dance so I'm pretty anal about this kind of thing.)
Finally, from watching the trailer it's obvious that your channel has to do with gaming... but consider the possibility that I won't bother going to the "about" section of your page. Are you doing play-through videos, reviews, commentaries, parodies, or something else? Having a little something at or near the end of your trailer explaining your channel more may help, even if it's just going to be a few lines of text.
Overall, not bad, I enjoyed it!
