I'm a be honest, this doesn't sound like a lot of thought was put into this. Sorry. Their is not much to say about sound design, and the synths are harsh against what was the original song. That point at 1:30 before the vocals actually go again, actually sounds good on it's own. The style your trying to make, though, just doesn't work with the way your forcing it on it. I see your really new, so I suggest before trying to put too much out again soon, take plenty of time to learn about sound design, maybe learn some on composition and arrangement so you make the sounds more organized and matching with each other.