My cousin is getting married in March and her wedding is going to be a gorgeous mix of blush pink, mercury glass, metallic finishes, luscious flowers and pretty, eclectic details. She's going to have a photo booth in one corner of the reception for guests to play around with, so we decided to create the backdrop ourselves. With about 20 yards of various shades of pink, gray and cream ribbon, we did just that! Here's how we did it: Materials: Glue gun, ribbon, cord, lace, rope or a strong…