Artist trading cards (ATC's) are miniature works of art (2 1/2 x 3 1/2), that fit in baseball card sleeves, they are usually traded or exchanged with other artists. Media for these can include: pencil, marker, pen, paint, paper scraps, found objects, embellishments, photographs, etc, etc, etc. This is a new medium for me, but I love it already, as it is another form of collage art. These are perfect to put with a letter or in a card as a small gift. Anyone wanna trade? Leave me a comment.