Get a 12 x 12 piece of cardstock, although I think any square size would do. Fold it in half horizontally and vertically and then cut out the top left square so you are left with 3 sides. Fold the top right piece down and the left piece over until it looks like a card. Add patterned paper to each piece until it looks like the picture. It can be made into a small scrapbook or a nice card with the greeting in the middle.