It sounds like you used 3 different songs in this vid, which is kinda wierd for me since it's only 49 seconds long. But I guess the vid serves its purpose as a trailer.
You can fit even more different music in less time (see my H2H vol5 dragrace start for example), but audio editing and proper mixing is VERY VERY hard, it takes not only time, but also a lot of practice...
Well, this trailer is sure an improvement on your previous work, but it's quite rough, if you know what I mean... You should "polish" your videos to the point where there's nothing rough or sudden, that viewer's eye can catch... It must be fluid... I hope this makes sense
thx for these comments and advice i know it is rough but i thought it will maybe be more exciting for the viewer... i thought it will be more "dust" to see the whole movie:P but thx you tell me that i was wrong with that