Winsor & Newton removable masking fluid.

I'm beginning to build up the basic painting structure. I need to stay away from the center of interest after this and just build up around it. This is a very simple dark surrounding light composition with some complicated objects confusing it.

I always paint a few strong darks in the first layer or two to gauge the value of the surrounding objects by.

I move around the painting more, narrowing in on the center of interest.

Darks should always be built up in several layers.

I paint the ocean in blues. I tone down the far rocks with cobalt blue.

Quinacridone Gold
Burnt Sienna
Cobalt Blue
Ultramarine Blue
Pthalo Blue

I continue moving around the painting, darkening around the center of interest.

After it's completely dried, I remove the masking.