You did a really good job choosing samples that go well with each other on this track. I know from experience finding samples that compliment each other is not easy. I will also say that for your first Dubstep track, You did a really good job structuring the song, there was not actually a point in which I got bored listening to this. However, my suggestion is that you don't have the drop bassline playing until second drop because it lessens drop 2's impact. Overall, great work and thanks for the follow!