Nice
Good stuff, keep it coming.
To the guy before me: real DnB IS repetitive. You're lucky if there are more than two beats in a song. Listen to the pros and you'll know what I'm talking about. Part of the greatness of the DnB genre is trying to make it sound good with such little room to work (because it is a relatively confined genre).
I think you've done an excellent job with it. It beats some of the pro songs I listen to, which is saying something. Not long enough, though.