The second one I just did today. I've been working on a 12"x12" painting where I'm using an old pillowcase wrapped around a canvas board that I'm not done with yet. For this ATC I took another scrap of that pillow case and wrapped it around a piece of watercolor paper and glued it to it with some molding gel glaze stuff. Then I painted it with acrylics.
"whistling in the wind"
Check out more ATC's here.