This is perfect, I don't think anything needs adding to it.
I think you should look at your audio differently. At the moment its very stop/start and doesn't flow. It needs something to bring together (energy and flow). In reality, the trailer crying out for a voice over (too late this time). However, I would look at ways to make your music more consistant and your sound effects less on/off and dominant.
I would start by dropping the sound effects completely and going for just the music. Then re-edit to bring in pace. For more advice come and see me.