7. Hang Floor-to-Ceiling Heavy Drapes

High-hanging drapery instantly elevates ceiling heights. Hang thick, floor-length curtains—such as crushed velvet or heavy brocade in deep garnet or forest green—just below the ceiling line and let them skim the floor. When drawn, they block out external light completely, turning the room into a tranquil sanctuary; when open, their textured bulk frames the window dramatically.