Cut a rectangle of colored card stock (twice the height of your envelope), and crease it in half with a bone folder. Then cut a square of slightly smaller card stock in a different color, and adhere it to the front of the card with a glue stick. Pick three-leaf clovers from the yard; you’ll need two per card. Place them between two sheets of paper and press them inside a heavy book for a few days, until dry. Leave one clover intact; remove a single leaf from the second one. Rub a glue stick directly onto the card-stock square. Carefully place the threeleaf clover, then add a fourth leaf to the stem. Let dry completely.