If you aren't familiar with the term dubstep, here is a basic definition. It is a sort of sub-genre of electronic dance music (sometimes abbreviated as EDM). Dubstep is a slower tempo than what we might sometimes think of as club dance music in that songs are almost always about 140 beats per minute (BPM).
The basic structure of a dubstep track is consistent and predictable, but there is still plenty of room to let your creativity shine. Try to at least somewhat stick to what listeners will be expecting (length of intro or other parts of the song). The guidelines in the video below aren't set in stone, but they're worth hearing.
Watch the full video for some great tips and information.