keep the existing circular trim molding on the walls exactly as it is in addition extend the same trim profile onto the ceiling by applying it flat to the ceiling surface around the room s perimeter the ceiling trim should sit just inside the wall line creating a continuous decorative ceiling border while the original wall trim remains unchanged match the profile scale spacing and finish exactly to the existing trim do not replace or remove any wall trim and do not add crown molding preserve all existing architecture lattice work lighting furniture colors and room proportions the result should appear as a cohesive custom millwork detail wrapping from the walls onto the ceiling