I passed this house on a walk recently. It has this grand entrance, but it's crammed into a tiny space on a little crooked street up behind Buena Vista Park. The scale makes it look like a stage set.
I decided to try an exercise I'd read about — painting upside down. I turned the original photo upside down on my screen, and then painted what I saw, hoping to be able to concentrate on shapes and light and not rely so much on "what I knew to be true".
It was interesting, but I didn't find it a terribly useful exercise. I may try this again.