Gotta be honest... the song had little to no actual dubstep qualities. The first 2/3rds of the song was just so muffled and quite literally sounded like I was listening to it with my head underwater. When I could actually hear the beat it was also drown out by all the ambient sounds.
Make the beat more noticeable throughout the entire song,
Use/Make cleaner audio samples,
Study how other, more successful dubstep artists structure their songs.
All songs have potential, most just need some tweaking and fine tuning. I would personally take this track and give it a few tweaks, then re post.