Mermaid Commissioned Painting Progress

Here are a few shots of my large acrylic Mermaids in Atlantis painting as it progresses from firstly a wash in greens and pthalo blues, with acrylic drying retarder mixed in with water to give a watercolour effect:


Then, in the second shot I have marked out all the figures and large details in white chalk, which is easy to wipe off with a damp cloth. I begin to block in the basic colours of the larger elements in the composition.