Hmm...
I like this one, for the most part. I like that you tried to make it more like a realistic piano. If you really want it to be lovely, you should experiment with changing the tempos as well as the dynamics. Ooh that part at 1:40 is so wonderful. Anyways, I would highly recommend that you just mess with speeding up a few beats-per-second in some places and slowing down in others. This also might be a piece to try slowing down a bit altogether...but it's hard to tell. Lovely piece. Do you have sheet music for these songs?