This "Rainting" was a result of being out painting in Reigate Priory Park on a "stipey weather" day (alternate bands of heavy rain and clear sky). During one such heavy downpour, from under shelter I thickly applied acrylic paints onto a primed board with, pallet knife, scourer, fingers etc. Then tossed it out spinning horizontally into the rain. I waited about 15 seconds before retreiving it. The Park Keeper Tom (who was present) thought I spoiled the created splash marks by draining it a bit. He let me put it in his Park office overnight to dry.