How to Draw DC Super Villains cover

Last year, I worked on a couple of "how to draw" books for Capstone Press, one featuring heroes and one featuring villains. The is the cover for "How to Draw the Joker, Lex Luthor, and Other DC Super-Villains", which will be available to buy as of February 1, 2015.                             

Here's the publisher's description: "What good are super heroes without some sinister villains to fight? Now super-hero fans can discover their inner artist by learning to draw the villains they love to hate! Simple, step-by-step instructions teach readers how to draw super-villains such as Lex Luthor, Joker, Sinestro, and many others!"

Thanks for looking!