yourATCstore Flower Frame Artist Trading Cards Collage Sheet. printed on professional glossy photo paper. This glossy collage sheet makes these ATC frame gorgeous. Just wait till you see this collage sheet in person; you might not want to give your art away! What great images to use on your Artist Trading Cards as well as greeting cards and more. This glossy collage sheet is professionally printed and comes in a crystal clear bag for protection. Sheet measures 8 1/2 in. X 11 in. and are Acid Free.