For my texture, I used real birch bark that I peeled myself off one of my birch trees on my homestead in the Alaskan wilderness. I brought some of it to Texas with me and am using some of it on this card. Then, I stamped birch leaves in the colors of autumn with Martha Stewart's leaf stamp.
Here's a link if you want to create something for the challenge.
http://www.moxiefabworld.com/2011/10/next-challenge-in-moxie-fab-world.html