It looks alright. I don't think it fits the mold of contemporary graffiti well enough however, usually there are more obscene angles with a variety of thicknesses of not only the main body, but the outlines also. The design itself is structurally sound, its just execution. I think the background detracts from the design itself. It would be nice if you found a nice wall surface and overlaid this on top of it to get a feel of how it would look.