The waffle hut

I want to do a scene from Fargo. The waffle hut is in the background (at night) so it shouldn’t be too detailed.
I worked on it on 2 evenings, no bump, displacement or fancy materials.

Just checking if somebody sees something very wrong with it, and ask again if someone has blueprints for the Chevy Corvair (Peggy’s car) that should be the focus of the scene.