Nice vid heres some criticism to help you out a bit..
*Try not to put in you planting the bomb, its pretty boring
*Don't put in so many 1 kill clips unless there good kills or something cool/funny happened in the clip, its makes the video seem a bit repetitive.
*Make better intros, they look ghetto.
*Try to add transitions in between some important clips, it makes them seem a bit more dramatic and stand out more (like the one where you defused the bomb)
*Try not to put clips from like every map in each vid, when I used to edit my vids, I liked to make each video like a theme, Like one vid would be pistols or sniper rifles, or if I had a run and gun vid I would try to arrange the maps, so that you don't see a different map every other clip
These are just some things that I used to do when I recorded, you don't really have to listen though..