This starts out promisingly, simple but effective square synth. The bit at 0:26 feels a bit empty, I know this is on purpose, but I would reccomend putting in some ambient sounds to fill the empty space; just something subtle. There's also the vocals, I don't really like that kinda stuff in dubstep, but whatever other people do...
Then there's the drop. I just want you to know I don't think it's trash, I had to give this a 3.5 because of the issues, but I think it shows promise. I'm guessing that's a granulizer, or maybe Serum (I don't have Serum, but from what little I've seen it looks like it makes basses from samples in a similar way to how a granulizer can). It's a pretty cool "bass", but it's way too much on the high end, it's too "light". It doesn't have as much "momentum" or "impact" to it as it should. Now you could either change the sound by making it more low pitched (if you are using samples then you could take a lower pitched sample), or you could keep the sound as it is, but put a reese bass under it. I mean, it doesn't have to be a reese, but just some "heavy" bass under the other synth, I just think a reese would do the job pretty well... I at this point I was bordering on a 4, but I have to give this 3.5 still, because as well as this the drop isn't very varied. It's that one sound, a guitar and vocals. It doesn't have to be super varied, but I find these more experimental "basses" work well in smaller doses. That brings me onto the final problem with the drop, it sounds kinda empty. This is easily solved, just put some chords or an arp under everything, but it's still there.
Then there's the percussion, choosing a clap over a bassy, powerful snare doesn't seem right for dubstep. It's just too weak. I know claps are easier to master, so I'm guessing since this is apparently your first track, you chose them 'cause you were struggling with snares. I'm sorry if that isn't true, I don't like to assume negative things; but I did it in the past, and I wouldn't blame you if you have. All I can say is, I'd reccomend against it. It's probably gonna be hard, and you won't get results fast, but try learning to make some good snares. Again; sorry if that isn't the case, I'm not trying to patronise you, it's just really hard to see how experienced you are from this piece. Some thimgs would lead me to say novice, some pro.
From there on out, not much more to say, just maybe add a kick to that ending to make it more powerful. Overall promising, while flawed track. It's closer to a 4 than a 3 to me, so I voted 4 for you ;). Just fill these tracks up and make sure your sounds have power, but the result is still entertaining. I'll have my eye on you to get you scouted.