For this one in my experimental series I used a postcard sized piece of glossy photo paper. I mixed separate pots of acrylic and poster paint - black, white, iridescent turquoise and phthalo blue - then added PVA glue and also a few drops of liquid silicone glue. I dropped paint from each pot on the paper, moved it round to mix the paints and then blew through a straw to create different shapes. As it dries the glue makes interesting cells appear. Thought this reminded me of being in a cave, looking out of the entrance to the cave .......