Nice! I kinda like the spacey sounds. Its very calming, and it has got something energetic in it. This is my opinion, you may dislike it: Around 3 mins its getting a bit too much. Mostly because of the delay and the reverb and the lead/synths in the background. But the piano solo made the end very happy. One thing about the piano is that its mastered quite rough. I think the cutoff is too low so you dont hear the high frequention that much. But I like the high frequention more in pianos than the low ones.
Well, Keep it up with the happy songs! Good work!