yourATCstore Beauties To Behold Collage Sheet. The images are perfect size for ATCs, as well as greeting cards and other collage project. The large images measure right around 3 in. x 2 in., with smaller duplicate images on the bottom that measure 7/8 inches high and just over 1/2 in. This matte finish collage sheet is professionally printed and comes in a crystal clear bag for protection. Each collage sheet measures 8 1/2" X 11" and is acid free.