The first thing I noticed was the kick. The kick sounds like it is made out of a bag of sand, by that I mean that it sounds like there is too much of the high end harmonics. When making a dubstep kick you want to focus on the 150hrz-1000hrz range, or the low and mid. The kick is usually the main and dominate element in the dubstep genre, besides the bass. The same goes for the snare. The snare seems to have too much reverb on the high end. For the snare, focus mainly in he 150hrz-500 hrz range, and a little on the 2000hrz-4000hrz range. Do not lower the high end on either of the drums, because if you do that the drums will begin to sound very muddy which is bad.
The 2nd thing would be the transitions. The transitions seem a little abrupt and forced. When transitioning to a drop, you want to keep the elements going and build up to it, hence the name build. Also, during the transitions you seemed to have changed the melodies, which is kind of not good because when you create a song you want it to have complete rhythm and harmony, even dubstep has harmony in it's drops, at least it should, or at least sound like it is going somewhere and has alot of variation between bass sounds.
The 3rd thing I noticed was the bass. It just doesn't sound all that EQ'd. I can picture it in my head. There are harmonics going haywire all over the Equalizer, and it may just be me, but I could barely hear it. By that I mean that I heard it, but that it just didn't catch my ear or attention. Plus there were alot of "bleeps" and "bloops," but hardly any reinforcing bass. Don't get me wrong, the bass was heard, but it just needs a little more EQing so that we're not trying to listen for it.
The 4th thing would be the sidechaining and mixing. I agree with fatcat and that you should sidechain the kick and snare to the bass, but there is a much easier and a much more organized way. I assume you use the limiter? if not,then we will have major issues. But assuming you do, the best thing would be to route all the drums, which is basically the kick and snare, or any other drums related, to one distinct channel. With that channel, you will sidechain the drums to the bass, and assuming you have a limiter on the bass, then simply go to the sidechaining on the limiter, and under the sidechaining menu simply put the drum channel as the one that is selected, and then adjust any according functions and parameters.
Lastly, there would be the vocals. The vocals were decent, but they sounded a little to obvious and didn't seem to blend in with the track itself. Try adding a little more effects to them, in stead of them just sounding like they were right from the show.
That's pretty much all I have to say about that. If you need any more clarification, or advice, then just PM me. I was going to take a bunch of screenshots, but I didn't want to unless I had to. So, if you need screenshots, just PM me or hit me up on skype and I'll show you, as well as answer any other EDM related questions.
P.S.- I learned alot from this man
http://www.youtube.com/user/SeamlessR. watch and observe his videos, and take his advice and knowledge. I don't know as much as he does when it comes to the "how" and "why" part, nor am I as talented yet, but I can understand what he does and can interpret what he is saying and perform perfectly. If you're like me then you should be up and on your feet in no time, just don't give up.