t's okay, try making it brighter, Joker is never associated with the color black. and that thing is TINTED a little too much. Also, you don't need to keep the drips in the "Why So Serious?", because since you did, the cutout seems kind of bad and imperfect. Try Using GIMP for a more precise cutout. If you're gonna say tl;dr, here's the breakdown.

-Make it brighter
-Make a more precise cut out of the WHY SO SERIOUS?
-with that I giv it 7/10

Thank you for the advice. I'm going to try to work on it more tonight and post an updated version tomorrow. I've always thought of The Joker being associated with black and darker colors while contrasting it with the bright colors like the ones that he wears (most of the time). Mainly because he as such a demented personality. Maybe I'll try to put that concept into play when I redo it.