There is a lot of information on the web about ATCs (Artists Trading Cards). They are miniature pieces of art – made to the following dimensions.
2 1⁄2 by 3 1⁄2 inches (64 mm × 89 mm)
The design in made on one side and date, name of artist and details of the artwork are written on the reverse. Cut your card ready for the next prompt that will appear later. If you are writing your details on the reverse at this point please make sure that there is room for more information which will be supplied later.
The previous post has details of the Postcard swap and also an exercise for those of you that don’t want to make either a postcard or ATC
You may like to prepare more than one.