I first started with white muslin. I coated it with watered down white glue and added scrapbook paper. I thought the clocks would add a fun background layer.
Then came the paint. I used several colors of green and teal. I watered down the paint quite a bit so that it would flow across the tissue paper. I work on a piece of plexiglass so that I can tilt the paper, causing the paint to run. The final product is always a surprise.