Well it depends on what your going for. Most trailers tend to make the viewers WANT to see your film. You have to build up anticipation for something. You really haven't done that in this.
I would suggest finding some music that starts to climax [although you don't have to this is just all advice]. Build your trailer with that music. Find clips that start out small and build up to more impressive stuff.
But you don't want to show EVERYTHING. You want to show enough to get your audience to see your finished product.
You need to watch what others have done before you. Its a great learning tool.
A production company that does this REALLY REALLY well is level 1.
Watch their trailer HERE
http://www.youtube.com/watch?v=W685SDozlfA