Ogwen Falls

I learnt a lot about painting moving water with this one. I started with brushmarks which flowed down with the water but this looked wrong. I had to scrape these marks off. Eventually what seemed to work was: paint the rocks under the water as clearly as possible; let dry; cover the area of the water with clear medium; then push dry paint into the wet medium with a rough-haired brush - but upwards, i.e., against the flow of the water.