This watercolor demonstration of painting sand dunes is based on a photo I took of sand dunes at Fingal Bay at Port Stephens on the New South Wales coast. The trick with painting sand dunes with watercolor is looking at the light and dark tones in the sand area as well as the various shadow shapes. The cast and form shadows combined with the tonal changes give the sand dune its shape.
Required watercolor painting Materials
Arches 300gsm Rough or Cold Press Watercolour Paper
Brushes: Sizes 24 and 16 for larger washes and 12 and 10 for the smaller areas and detail.
Paints: All Winsor and Newton – Cobalt Blue, Raw Umber, Burnt Sienna, Cobalt Blue Turquoise, Aureolin
Backing board, masking tape, old towel to control wetness of your brushes, etc
Reference Photo for Watercolor Painting
Simple drawing and watercolor underpainting
Do a loose drawing of the scene. The key area is the line at the top of the sand dunes and a general indication of areas in shadow and sunlight.
Once this is done mix some cobalt blue with lots of water, the consistency should be about the strength of a weak tea. This will become the under painting for painting sand dunes.
With your board tilted to about 25 degrees paint the sky area down to the top of the sand dunes. Then add more water to your mix of cobalt blue and paint a light wash of cobalt blue down below the top of the sand dunes as in figure 2.
It is very important to leave the light parts of the paper below untouched by the Cobalt Blue mixture.
Leave this to dry thoroughly!
Continue to: How to Paint Sand Dunes with Watercolor -Step Two