I'm not going to tell you out loud what you did wrong, because that would be mean of me to do something I know would discourage a young artist. Really, nothing can be wrong, but there are things you could do better. First of all, this piece resembles a lot of playing I knew myself to do, and that was before I knew how to do better improvising. It'll sound good for a while, but it isn't quite a song. Its more like a new-age style of playing. Not quite random, I can see a pattern here, but the notes are still somewhat erratic. Second, the beat in the background is pretty good, though isn't matched up quite how it could be. Its also very soft, and the piano kind of shutters it out. But that's about it. You did good for trying something new. It personally isn't my taste, but that's just me. I'm sure others would think differently. I hope my review is helpful, at the least. Please don't be offended, and keep up the playing! You're getting there!