I like the Joker theme you got goin' on - it's nice.
Back in the day, a lot of the GCrew members would have shunned you for this being monochromatic. I never understood that. If you take a look at a lot of classical art from back in the day, they'd use entirely one colour to finish a piece and the outcomes were breathtaking.
What I will say about this piece, however, is that it is very washed out and kind of over saturated. I do like that there's a clear separation between Batman's black attire and the whiteness of the Joker. It add's a very interesting aspect to the focal that I would have liked to have seen drawn out to the edges of the scene.
The lighting is very strange to me. It's almost as if the Joker is the light-source. But if that were the case, the scene and the surrounding area would be much more lite. Maybe a spotlight? Batman would be lighter in that case, or there would be more space between them.
I like the idea of this tag. I hope you keep making more.