Basic classicalytiness
Classical music has a certain thing to it. It's hard to ruin once you know how to compose classical music. Overall classical keeps you safe. I can fairly say that this tune was safe and not daring. Though good music doesn't have to be daring. Most music is good by just rocking at the basics.
I do, however, believe that you can polish up the use of your techniques. I often heared the backstrings/synth fall rather abruptly and leave the piano "alone". Having only one instrument playing is rather dangerous. Whenever you do that, you must have a good reason to it (like an ass-kicking solo or something). Even though piano can sound very good on itself, I think that it didn't really "fit" into this song too well. Adding to that, I noticed that the piano volume was a bit dodgy. You might want to hook that up to a EQ (and maybe a reverb?). Also, the bass notes on the piano didn't ring through too long, the function of the lower tones is to provide a steady base for the main melody. Just bits of suggestion there.
The percussion was not standard, but sounded good anyway. The "sticks" together made the whole thing a tad more lighthearted. I believe that those were a good contribution to your song.
Overall I liked the song. Not too special, but not bad either.