It's okay...
The piano came across as a bit dull in the beginning, but significantly improved throughout. I felt it lacked a healthy ammount of variety though, which was a dissapointment. Fairly short as well. (Though my songs are short as well :P)
I think I can see where you are going with this piece, but it really just didn't spark my interest and is slightly (I use this lightly) boring in my opinion. I think adding some more instrumentation wouldn't hurt either, though that's not a big deal.
Okay, but not great.