Learn all the basic techniques for creating personalized Trading Cards (ATCs) for friends, family and pen-pals. Consumers will love Lisa's fabulous ideas, original shapes and clever folds. One of the hottest collectible trends going. Artist Trading Cards are limited edition works, and because the artists put so much creativity in such a small space, these are truly valued by their owners. ATC's can be made as unique, one-of-a-kind works of art or they can be made in numbered identical sets called editions.