Quite a few things could be fixed in this song. I know that I wrote a criticizing comment on YouTube, but I wanted to make a more in-depth one here. The first thing is that you always the default preset in FL Keys, which sounds terrible, no matter what effects you have on it. Another thing is that you always use on cymbal roll sample over and over again. I believe that you are hurting your songs without yourself even realizing. These problems can be fixed very easily. You can use a different preset on FL Keys. I suggest using "Dance Piano," but I have a good sounding one here for you if you want it. I made it myself. Smart Piano FST: http://www.mediafire.com/download/v0uc4a1f91n1j1j/Smart+Piano.fst. About the cymbal roll, there are a plethora of samples out there, and one site I suggest is LooperMan. It is a great place where you can get many well-sounding samples for free! Anyways, nice melody, but there are a lot of things that could have been improved upon.