Actually very good for a beginner.
You are now scouted, by the way. KEEP it like this. USE what you know already. Learn a genre one at the time before jumping genre to genre so you know of techniques, etc. (That's my advice)
There are parts missing in your track. It felt kind of empty. Keep learning!
I don't know how to make dubstep, so I can't help much. All I know, it's not a hit dubstep song yet. It needs more to the sound than you have now!
KEEP IT UP. <3