Hillside Tree Study
Another go at a tonal approach. This is 5×7, gouache on gessoed Crescent board.
This was painted over a yellow ochre underpainting, and has a bit more green in it. The tree trunks were created by using a wet liner brush to lift the top layers of paint, leaving a suggestion of the ochre color, but going almost to white. The intent was to suggest a late afternoon glow on those trunks.
And a blown up detail: