I have done some research on them to find out as much about them as I can :-)
And browsing websites looking at the different beautiful artwork......
Artist trading cards (or ATC's):
They are miniature works of art about the same size as modern trading cards or baseball cards. They are 21⁄2 by 31⁄2 inches in size _ small enough to fit inside standard card-collector pockets, sleeves or sheets.
Cards are produced in various media, including dry media (pencils, pens, markers, etc.), wet media (watercolor, acrylic paints, etc.), paper media (in the form of collage, papercuts, found objects, etc.) or even metals or fiber. Any kind of materials. The cards are usually traded or exchanged.
This is my first ATC that I made lastnight:
In all my browsing I also found a challenge blog for ATCs.....called ATC's With Attitude
I love doing challenges :-)
I am entering this into their Challenge # 43 - Bright & Cheerful