Try to vary your drum pattern a bit, try to use more kinds of intruments. Most of my songs have at least 15 different kinds of instruments. Also, that drop is very simple. A typical dubstep drop isn't like that, you need to get some wubs and growls and all sorts of noises to make it similar to a bass drop. That melody is also very repetitive, try to vary it a bit.
Overall, it isn't a very good dubstep, but you can improve it by doing the things written above, try it, it will certainly improve your song.
And this isn't a hate comment at all, it just tells you what you can do for this song to be good.
Have a nice day!