NEW yourATCstore Vintage Santas & Angels ATC Collage Sheet. So many Santas & Angels to choose from. There are so many doubles so you can make 2 identical Christmas ATCs. There are also some holiday phrases that you can use when creating your ATCs too. This collage sheet was professional printed to bring out the best in clarity and colors. The collage sheet measures 8 1/2 x 11 and comes in a clear protective bag.