Only one thing, it sounds a little like the song and your voice are two different things. Not that your voice doesn't fit the song, its just this weird thing I hear. Uuh, I don't know an easy way to describe it, but its like your voice is coming from outside the song, like it should be in the middle of it, but yours is standing next to it. I don't know music a lot, nor a way to make it sound more "inside" the song, but that is just my opinion.
Again, still sounds lovely.