Here's a poster I did a while back for DC Comics and Looney Labs. This has a fold in the middle and will also be used as a magazine ad, so there's a vertical space right up the middle where I didn't want anything vital. What I decided to do was to divide the space into two warring halves, good guys and bad guys. And like my Regular Show poster, I wanted to have the characters facing off with Fluxx cards in hand. Here's my AI vector sketch.
Unfortunately, due to corporate guidelines, characters cannot touch product or logos (notice how close Robin gets to the Fluxx logo without touching). So realizing that, I decided the faceoff still worked, even without the cards. Here's what we ended up with:
As always, click to enlarge.