At the airport I work at there's a nice little courtyard surrounded by trees. The area is enclosed by offices and hallways that slightly resemble Brutalist architecture. This image was inspired by the courtyard, and it was created while listening to the well-measured soundtrack of Ex Machina.
A lot of the things I've been learning on Learn Squared's Intro to Environment Painting helped too. The clipping mask and lasso tools are especially helpful for making quicker images, though this took a little longer than a normal sketch. I also like the film noir aesthetic, and I tried to incorporate a little of it into this shot.