I am really having fun in that concertina sketchbook. I have taken 6 or 8 pages and made a continuous work across the pages. I've never worked in that format before and I have to admit I am having so much fun I can't seem to stop. I have shown you the first and second spread. Here are 3 more:
Starting to loosen up
I used oil pastels, PVC glue, matte gel medium, tulip dimensional paint and stickers (maybe more) as resists
Harder to do than you might think.