I'm still going to tinker with it before my class next Saturday. I lucked out and found black cookie sheets at the 99 cent store. I used my cropadile to poke holes in the top for the ribbon. The patterned paper is Imaginescense. I'm going to be making a few of these to give away as Christmas gifts this year. I am participating in a cookie sheet advent calendar number swap on 2peas and I am going to do a vintage red/white/black for my background.
If you want to make a cookie sheet advent calendar, I can email you the calendar grid. You'll need Microsoft Word and you just print it onto 8 1/2 x 11 paper.