Not a lot of variation in this piece in general, though I hope you have plans to take it somewhere.
The synth going solo at :27 simply adds nothing to the overall contrast and strength of this track. I would recommend placing some sort of differing break in there instead, then you can go into the buildup again.
Not enough change in the overall soundscape at all at the moment. Everything besides those string modulators in the background is mixed to the forefront, making it sound fairly crowded.
Good luck.