Good sample, man. I just suggest a little more distortion on your synth. Smooth it out a little, make it sound a bit more grungy with layers as opposed to static. I do like the drums and the intro/mid-section synth quite a lot. I just think that with a little tweaking of the main synthesizer it may make it sound more dubstepish. As well as that, a lot of good formulas for a dubstep song involve plenty of back ground noise, whether it be higher or lower pitched backup synthesizers, or even just random sounds (such as the man yelling "Woo!" in this song, nice touch.) I do like it man, and keep up the good work!