You did very well in capturing the spirit of the artist who inspired you here, with such a funky and fun groove. The problem is that the entire second half of the song feels repetitive and lacks punch, which in turn makes it feel like it's gone on for too long. Change the genre to Electronic-Dance instead of Dubstep because one thing is certain- this is not dubstep. At all.
Still, though, the overall product isn't bad. Solid 8/10