I set up in front of Deb's Studio on a freezing cold morning. (Unfortunately Deb was away at some sunny California location painting one of her incredible plein air paintings.) I on the other hand was freezing my kaboodle off standing on the cold sidewalk painting a local street scene.
Once I got home and warmed up, I worked on the final 6"x6" canvas. The plein air sketch on the left was my guide.
Not too much changed in the second version . I mostly just needed to clean and sharpen lines.