Well... The Hard part, the small notes, should sound like a pearl necklace falling to pieces: Really light and just... well, a bit faster. The other thing, is that you loses way to much tempo in the end, in my opinion. And you do almost extact the same phasering (or whatever it's called) everytime in the theme, and that's nice... like one time, but not through the whole piece. It's really beautiful as it is, don't do too much out of the musical view.
Everything is in my own opinion, you don't have to agree, and I am just 19, so I maybe not have any idea of what I am talking about. But that's what I think.