There's so much resonance at 00:14 and 01:04 that it's clipping!! Nice effect, but only in moderation!

Also, at 01:54, it sounds pretty empty. In contrast with something like Omar Varela's "Last One" (
https://www.youtube.com/watch?v=wsruT6TtXx8 ), there's a noticeable lack of fullness in this song's dubstep portion. Part of that is due to what kind of main noise Omar used; he used a noise with more fatness, which I strongly suspect made it easier for him to construct the drop. He also didn't choke off that main noise, either, which definitely contributed to the fullness of the drop.

But even doing all that isn't usually enough. Typically, if you listen closely to the drops that the pros make, there's all sorts of stuff in the background - risers, falls, big long tones, chants, chords, arps, even melodies sometimes. It's just pretty quiet, and it's not up front. (A good example of these things would probably be Getter's "Rip 'n' Dip" (Kill The Noise Remix). https://www.youtube.com/watch?v=Oy7EKuq5yuA )

Observation of the pros is key. Just don't fall into the deathtrap of "they're so much better than me".