How to Make It
1. Score and fold a 7-x-10-1/2-inch piece of card stock in half using a scoring tool and a ruler. Fold against the ruler and run a bone folder up and down the back of the paper to flatten the fold. (If you don't have a scoring tool or a bone folder, use a butter knife.) Score and fold a 5/16-inch-wide flap on both sides of the inside of the card.