Just a little experiment here, my test version. Today was hot and I felt wilted, not perking up until this evening. I wanted to get into something but needed to stay on the light side.
Although it's now hard to tell, those sweet pepper bush leaves were first imprinted with india ink. The ink went down before any egg tempera.
I have just started a new panel where I'm laying in the background first--same radial pattern with a vellum-like texture. Once that is down I'll drop in inked leaves and build up from there.