Here's the back. The background paper is black and white, but I used an orange Copic marker to color the white parts. The "treat" bingo card and "costume party" images are from the new Crafty Secrets "Halloween Greetings" Creative Scraps. The kids in costumes are from the new Collage Stuff "Trick or Treat" collage sheet. The little flower is from the Prima Craftable Flowers Minis. These flowers are tiny and white. I colored it with my Copic marker and applied some the orange peel Stickles glitter glue. I may move the text part around on subsequent pages.
Both of these designs are simple really. I have to make 16 of them, so I need something simple that's still fun.