Sounds like you already know a good deal about production. I don't have good headphones at the moment but it sounded like you had some clipping going on up in that mix. If you're unfamiliar, clipping is just distortion from overdriving your signal too much. Analog distortion can be nice at times bu...

So this is my very first dubstep song. I was just wondering what should I improved on? Should I add more to it?