The format is 2.5” x 3.5” on whatever you want.
I made these back in 2011; more of a collage style than what I would do now.
Last photo is a plastic template for the size of an ATC. It’s really handy if you create a masterboard, then use the template as a window to find which areas you want to cut down to be your ATC.
#artstr #nostratc
