Have you heard the term ATC or artist trading card and been curious what that means? It’s actually pretty simple, ATC’s are baseball card size cards that measure 3 1/2″ x 2 1/2″ inches and are made for sharing and trading with your artist friends. You can stamp on them, collage or draw on them, whatever you want. It’s a fun, simple and small way to share your artwork. Hero Arts has a great video tutorial for a simple ATC, perfect to get you started.