Really good, but I have to say a couple things about the mix.
The Kick in the first bit is a bit underneath the lead. You may want to add some reverb and quiet down that lead. The snare is great. Also, there are a couple theory problems. The notes don't mix.
I like where you are going, to a classic dubstep song, but it needs some better sounds and mixing.

I guess you use FL Studio or Ableton?

Nada mal amigo!!! Eres muy bueno eeee ;)