Guinness World Record Marker Comp

This is the marker comp for the Guinness Book of World Records poster. I added a shadow on the back wall to help create depth and picked colors that I though were halloweeny. I plan to put the title in the upper left corner and the body text/info in the lower left. I really want to use watercolor because I haven't used it in so long, but I might end up using some gouache also for the tighter details.