Ain't dubstep, but still nice!
It's pretty tight, but dude please don't post this under dubstep, it's misleading!
this is electro house!
Oh and you should throw in some more sub bass!! for real!!!!!11!!!!11
I like the synths btw!, you could work on the build up of the song, and try to get some more consistency. also, try to develop youre own sound more, that's what gonna get you big!
Props for the producing skills btw, you're doing good!