
With a mix of French ultramarine blue and burnt sienna I indicate where the main tree trunk would be and some of the larger branches.
Using cadmium yellow and new gamboge I put the first layer of colour over the tree trunk and branches on the main tree and the smaller tree to its right.

Starting on the larger tree on the left side of the painting and using a mix of lemon yellow and new gamboge for the lighter areas of leaves.
Cadmium yellow was added to the base colour for the next layer of darker leaves.
Burnt sienna was added to the mixture and used throughout the trees in the painting to unite them.

The leaf colours were put in with vertical strokes of the various mixtures of colours.
Lastly, the grasses and growies at the base of the trees were put in using raw sienna, burnt sienna, cadmium yellow and new gamboge.
If you would like more information about OSWOA please go to my post on 12 March 2010.
The OSWOA shown here is an original watercolour painting using Artist quality Windsor & Newton paint on 300lb. Arches 100% rag, acid free watercolour paper. It is priced at $40.00 and sold unframed.