Plein air local landscape, willow charcoal sticks with a touch of white Conte chalk, on A3 toned paper. Louise Balaam - Monthly Landscape Painting Plein air local landscape, willow charcoal sticks with a touch of white Conte chalk, on A3 toned paper. Skills Posted on September 25, 2023 ← Gouache experiment 2. Richard Ironside, watercolour gouache,Derwent XL Graphite →