Brilliant job :)
The beginning is so soothing, it brings the image of staring up at the night skies to my mind. I just love the transition at 1:12, simple but effective. The melodies are brilliant, they all really went well with each other.
In my opinion, at around 2:35-2:40 you should have added some delay or reverb on that piano and had it just playing alone for a bit without the arp.
I would have added a few more drum variations or drum cuts but that's just me ;) The cymbals you used sounded really swell, I have a hard time getting good ones some times.
Overall, a great calming piece. I'm definitely going to check out your other work; thanks much for your review, I really love getting constructive ones. And do you use FL? If so we should definitely collab some time.
Keep up the good work!