Maybe I should move the long catwalk somewhere else, but... here is a small process of the exterior establishing shot (not final). I really like the composition and use of colours. Colour picking from rusty colours was the perfect idea, thank you Phil and Kayliegh! The bottom image of each section is a more zoomed out view.
I feel I may need to add more houses below the dirt, but i'm really happy with the progress. Using gradient maps and blending modes to colour from greyscale didn't really work for me.
I would appreciate any feedback :)