Gief moar!
Really sweet! I agree with AlertG in a way, but not completely. The piece sounds very done so far, so i dont think you should tinker with it to much. The whole "song" should be moved to about the middle, and then build the rest around it. A thing that might work is if you took the middle melody, and try to fit it in as a starter. I dunno, but to be honest man, dont tinker to much with this, cause you might ruin something that sounds sweet already :)
Big ups! Faved and rated 5/5.. Gonna keep track on this ;)