How to paint a Turquoise Wave

“Turquoise Wave II” is inspired by the Jurassic coastline of Devon. It shows a large wave cresting, lit by the sun turning the waves turquoise and emerald green. The time of day is key here. It is midday, the strong sunlight is reflecting off the sea turning it white. The highlights become a mixture of emeralds and blues contrasting with the deep blue of the sea.