I've been spending time on the porch where the sun heats it up a little better.
I've only made ATCs once before (a long time ago), but we had some playing cards that didn't make a whole deck, so I gessoed them. I put it on kind of thick so it takes a while to dry.
I brought Derwent Inktense pencils with me, so that's what I used to color the ATCs and also to add color to my drawing. These are very cool pencils...different from watercolor pencils in some important ways. There is a nice article HERE about the differences. The colors are much bolder once they are wet with a brush, and I'm still getting used to that. In real life, the climbing hydrangea is very subtle colors that would be easily achieved with watercolor, but I veered from reality and made them brighter since I was using the Inktense pencils.
Loving playing with the colors. I colored some directly on the cards and then wet with a damp paper towel. Others I loaded the brush with water and used the pencil as a watercolor pan, drawing up pigment that I could paint with and splatter around.
I wrote on some with Indian ink before or after painting. It will be interesting to see where these go.