When i first heard the beginning of this, i was completely mindblown by the sheer combination of background and melody; it sounded absolutely spectacular. The thing that let me down was the fact that this is a dubstep themed song. I normally dont like dubstep, but this wasnt "quite" dubstep. Of course, it has wubs and such, but it had its own feel to it, yakno? What id recommend is tweaking the synths abit; the ones you currently have for you dubstep part is IMO, a bit too rough for the song tune; but thats me. Overall great work on your mastering, structure and melodies, but once again, id tweak the main dubstep part synth. Thats my feedback on this atleast; hope to hear more of your work!