Cool piece!
I liked this a lot. You have a great flowing texture, and I also really liked how the delay on the piano flows into the played notes so that sometimes you can't tell which is which. On to the criticism:
1) The harmony at :30 sounded "wrong" me. I believe it is discordant rather than dissonant. You have a number of delicious sounding impressionistic chords throughout that sound very right to me so - if you want this passage to stand out that's fine, but just make sure your being honest with yourself that this is the sound that you want. If it is what you want, consider bringing it back at the end so that it is more memorable and sounds less like a mistake.
2) At 1:27 you suddenly lose a bit of the harmonic tension. It sounds unintentionally weak to me. You might consider smoothing over that spot with a more interesting harmony. (like what you just had a few seconds earlier). In impressionistic piano writing its important to make sure that the tension flows and ebbs in a convincing and smooth manor, in the words of my old harmony prof, "you want surprises, not shocks".
3) 1:44-46 sounds a little weak to me too, harmonically. It just feels like the oomph is falling away from your wonderful impressionistic flowing sound. Make sure this is actually what you want.
4) Loved :44-1:00, wish I had written that :D
Overall, I'm really happy to have discovered your music from the classical review thread.