Paint the trim.
Differentiate the walls from the ceiling with a 3-inch band of paint in a contrasting color.
Say no to overhead lights
. Don’t draw attention to it, rather hang wall sconces.
Remove picture rails.
Picture molding can make the wall feel lower than it actually is.
Choose thin molding.
When picking baseboard and crown molding, use a design with thin proportions.
Raise the curtains.
Mount drapery and rods as close to the ceiling as possible, and stick to light wall colors.
Use crisp curtain panels and low-slung furniture.