Artist Trading Card Double Buddy Jam
mixed media on paper
ATCs stands for Artist Trading Cards.
They are miniature works of art, 2.5 per 3.5 inches, supposed to be traded between artists as a small demonstration of the creators artwork.
On a Double Buddy Jam, the first person sends 2 similar ATCs to a second person. The receiver works on top of those starters, keeps one and returns the other to the sender.
On the ATCs back, the receiver may sign and write the date when he received and the date of the art creation.