I've been making progress on my series this week. The pieces started with acrylic paints and then I added some collage papers.
Then I used either graphite or Stabilo All pencil to define some rough, mostly rectangular shapes.
I used some hand-carved stamps with permanent ink.
I defined a few areas with white paint and painted over with a contrasting yellow green, and added blue violet accents.
I added some more white and have been tweaking some areas. I'm not sure if I'm done, but I've started another series!