The first tree trunks to be painted in were the large ones from my sketched composition. Then I gradually added more and more, stepping back regularly to assess how it looked.
One major change from the sketched composition was the addition of two large tree trunks in the left-hand side of the painting at the front. (Later on I took one of these out again; see Step 5.)
The colors used for the tree trunks were raw umber, Prussian blue, and quinacridone burnt orange. In the last photo, you can see where I've started using the latter color on the forest floor too.
