Lone Tree app 6x6 Oil on wood panel

Corot painted like so many of us, stacking transparent glazes on top of one another from white to medium to dark. But I read that when it came to trees against the sky, Corot had to reverse the process. You paint the dark silhouette of the tree - trunks and leaves- against the previously painted sky, and after the silhouette, you paint in leaves. The last step is painting in the light filtering through the leaves with opaque paint.This is what I have done here with an old tree that I observed for years out of my rear window.