add clean simple architectural shading to the uploaded 2d line drawing keep the drawing black and white with no added color apply soft uniform shadows on roof planes under eaves and beneath overhangs to create depth add light directional shading on wall surfaces to define form using subtle gradients that do not overpower the linework keep shadows minimal crisp and consistent with a single light source such as upper left daylight do not alter the lines or add textures only add simple tonal shadowing to enhance the clarity of the elevation architecture
