I agree with Ornery.
Noble effort, but Cloudy, you're no singer. Not at the moment.
The way you did the background sounds is kind of cool, and I think the lower parts sound a bit better than the higher parts where singing is concerned. Perhaps you should choose a song that Win sings (Neon Bible would probably be a great choice; short, simple, and yet great) instead of one sung primarily by Regine, because, man, falsetto really doesn't work for you.
Vocal work is like visual arts, in that with enough training and work, no matter how much you suck, you can eventually get good with it, as long as you realize what you're doing wrong, figure out how to better yourself, practice, and have some semblance of understanding of music. I know this because I spent some odd three months teaching myself how to sing well enough to keep up with chorus kids in my school's musical. I can't really tell how serious you are about making music, but if you really want to do well with this, keep at it. You've got a long way to go, but it's not impossible.