I tried this on a large canvas and the sky was terrible. It was soooo dark and I couldn't keep the Prussian blue out of my yellow! I think I used too much paint.
Had a bunch a small canvases from my acrylic days so decided to use that! I only had acrylic brushes so couldn't get the right effects but I think it came out OK!
Going to get better small brushes and try another lil Ross!