This one has complicated patterns of light and shadow. I tried to paint only the shapes I could see and not worry about the actual subject matter - this warm dark, that cool light and so on - one square inch at a time more or less. By painting the shapes,in the correct size, colour and value, eventually two dogs will emerge. It took a surprisingly long time. I tried not to use the same colours in the shadows as I used in the lights (in order to differentiate them more securely). I tried to keep some mystery, especially in the shadows, and not sweat the detail.
Happy Autumn Equinox. I hope the sun is shining where you are.