The collage that will eventually have dandelions above the raffia hit a snag. At my favorite art supply store they had no Tyvek, but convinced me to buy Lutradur instead. That stuff soaks up acrylic like a sponge. I managed to get it painted the several shades of yellow that I had planned but needed gel extenders to get it to flow instead of immediately soaking through it. I am glad I put a plastic shower curtain on the table first. Back to Tyvek from now on.
I used the same shower curtain when I sprayed the raffia green. It now needs some real brush painting to enhance the hillside look.