Ok, so I am leaving this review to try and help you make better music. I don't want to sound hypocritical because my dubstep is straight vomit, but I wanted to offer some tips.
First off I notice you tagged the song 130 BPM, which is not accurate to typical dubstep tempos (Dubstep is typically 140 BPM or 110 BPM, mid-tempo is 70 BPM, and Drumstep is around 170 BPM), that isn't an entirely big issue but it could be fixed in future work.
Second, you don't really have a drum pattern. The drums are just.. out there. They'll start and stop at random times and it's mostly kick drums. In dubstep, typically there is a kick and snare (this is not restricted to a kick and snare, but it is common) synchronized into a two step beat. A 2 step beat is, for example, a kick and snare played every 8th step (in some cases it's every 3rd step). You will hear this pattern in just about every dubstep song. There may be a variation, but the 2 step beat will remain the same.
Third, there isn't really a build-up, the drop just kinda.. hits. I will say the wobbles were well placed I will say. It was a bit too high pitched for my liking, but that doesn't affect the score of this review.
Overall the song is promising and I hope to see improvements later. Keep working at it!