I'll be honest...
When I read your author comments, I already thought 'oh no'.
'It didn't take long', and 'i made it with mostly preset sounds from fl studio'
There's the major problem.
1) Take your time to make music, and you'll see you can create far better pieces.
2) Be original and try tweaking knobs on the FL synthesizers, so you can create your own sounds. Also, better not use those stock FL samples (the drums) but Get yourself some better samples than that, for example at vipzone-samples.com
Or you layer some FL samples, and try to make them sound original with effects.
I think you didn't use any effects at all now to be honest. You should check out the mixer in Fl studio, and play around with effects a bit, look up some tutorials on youtube or so. And yet again, don't be afraid to tweak ever knob you can find, and discover what you can do with FL studio.
Now for the song itself.
If you want to make trance, listen to a lot of professional trance, it gives you more of an idea of the strcuture of a trance song. Try making buildups, breakdowns, climaxes and all, this song rather goes on and on and has random sounding notes to me.
I hope this review is a bit helpful for you, That's the only purpose I wrote it for. My previous review I wrote was also meant to help the artist, but instead he started flaming me :p So you know, I only want to help you :)
Good luck in the future!