single concept art, old city street scene, brick apartment buildings, closed storefronts, vintage street lamps, large billboards on rooftops, few pedestrians walking on street, loose sketch line art, rough draft strokes, expressive hatching, sunset side rim lighting, cyan and terracotta orange complementary color scheme, flat 2d animation background art, storyboard sketch, color blocking, no 3d shading, kraft paper texture, animated environment concept,