Great work! :3
super gasp! I just learned what typography and kerning were today in my Graphic Design class! Moving on though, I like this composition. I really like how Joker and Harley are super detailed and the fire behinthem isn't. It makes you aware that there's fire there, but it doesn't overwhelm the Joker and Harley as the focal point.
Overall, great job. Bonus cool point for hand-drawing your typography.