create a highly photorealistic ceiling with exposed wood beams and a scalloped plaster infill maintain the exact layout and proportions of the ceiling and beams ceiling detail the ceiling between beams should be tight small scale scalloped plaster not large waves each scallop should be shallow and closely spaced reading as fine rhythmic grooves rather than bold curves scallops should feel subtle and refined similar to narrow fluting or compressed wave detailing avoid deep or oversized scallops finish should be smooth painted plaster with a soft matte texture beams beams should read as real stained wood with visible grain natural tonal variation and slightly softened edges lighting realism use soft natural lighting to create gentle consistent shadowing within each small scallop to enhance depth without exaggeration avoid high contrast or deep shadows that make the scallops appear larger than intended critical direction do not enlarge exaggerate or stylize the scallops keep them tight subtle and high end refined architectural detailing rather than a decorative feature