Joker doesn't want to take over the world! I won't get into what he's really all about, because I'm supposed to be leaving a comment for this person. ;)
I love the picture. I think you did a great job detailing HIS torso. I like the hands. Nice stylized version of him. Very nice, really.
Woo! I love the message that comes out of the Joker's gun, and I love that Harley worships him, because we all should, after all, he only wants to fill the world with laughter... and, sort of, take over it as well, ahem.