use the reference image as the exact locked design and composition guide preserve the exact camera angle framing shower proportions bench size niche placement fixture placement wall layout and overall architecture exactly as shown do not redesign the shower do not add or remove anything this is a realism upgrade only main goal make this shower look ultra photorealistic like a professionally photographed built luxury bathroom while keeping the design exactly the same only improve stone realism lighting realism fixture realism shadow depth surface texture dimensionality overall photographic realism do not make design changes do not change anything do not change the camera angle do not change the shower layout do not change the bench size or location do not change the double shower configuration do not change the niche locations do not change the shower heads do not change the hand showers do not change the controls do not add decor do not add bottles do not add glass do not add accessories do not remove any existing elements do not redesign the shower shower design this is a double shower keep two shower fixture sets one on each side maintain the built in bench across the back wall maintain the double niche configuration one on either side preserve the open architectural feel of the shower keep the exact symmetry and layout shown in the image walls bench niches material realism all visible wall surfaces niche interiors and the bench are bas stone nyc travertine silver blue make the stone read as real honed natural travertine slab soft cream taupe beige silver gray and subtle blue gray mineral movement realistic sedimentary layering and clouding visible natural variation within the slab subtle pores pits and mineral character non repetitive veining authentic slab scale soft honed finish restrained reflectivity realistic depth instead of a flat printed texture no glossy or plastic looking stone no washed out stone no fake repeated patterning the stone should feel heavy dimensional natural expensive tactile architecturally substantial bench keep the built in bench exactly as shown same dimensions and proportions clad in the same travertine silver blue make the bench feel thick solid and built realistic slab edge detail subtle shadowing underneath and where it meets the walls clear material continuity from wall to bench niches keep the niches exactly where they are same size depth and placement niche interiors are the same travertine silver blue realistic depth and shadowing inside the niches niches should feel carved into the slab wall system not flat cutouts fixtures all shower fixtures remain bronze matching the current image make the fixtures read as real premium bronze plumbing hardware rich warm bronze tone matte to satin finish subtle realistic metal reflections crisp edges accurate circular shower head perforations dimensional hand shower detailing realistic metal thickness shadowing where fixtures meet the wall high end clean minimal appearance avoid flat black metal soft or blurry detailing distorted fixture shapes simplified or generative looking hardware ceiling ceiling remains venetian plaster warm off white tone subtle hand applied texture soft tonal movement slight natural imperfection smooth refined finish not perfectly flat or cg looking floor keep the shower floor exactly as shown clean minimal light toned surface soft matte finish realistic light response subtle texture variation no blown out white floor no flat blank floor surface lighting critical realism fix lighting needs to feel real soft and architectural natural light use soft natural daylight bright but calm luxury interior lighting daylight should gently wash across the stone walls and bench preserve detail in both bright and shadowed areas realistic light falloff across the back wall avoid flat ambient lighting avoid harsh overexposed hotspots avoid yellow color cast interior light balance keep the shower bright but still dimensional allow subtle shadowing inside the niches allow gentle shading under the bench edge keep the bronze fixtures readable against the stone the shower should feel like a professionally photographed finished space hyper realism requirements focus especially on realistic slab depth and veining true travertine roughness variation subtle pores and mineral character strong but natural contact shadows ambient occlusion in corners niches and bench edges realistic bronze reflections crisp edges and clean transitions believable ceiling texture realistic light falloff non uniform surface roughness no flat surfaces no cg simplification what to avoid no redesign no added accessories no extra shelves no bottles no glass walls added no glossy stone no repetitive slab pattern no blurry fixtures no warped shower heads no distorted hand showers no flat niches no flat bench no overexposed back wall no washed out floor no yellow filter no cgi looking materials final intent create a magazine quality ultra realistic double shower render of this exact view with bas stone nyc travertine silver blue on all walls niches and bench bronze double shower fixtures built in bench double niches venetian plaster ceiling realistic daylight true material depth sharper fixture detailing and a calm refined fully built luxury feel keep the uploaded image visually identical in design and composition only improve realism negative prompt no redesign no layout changes no added decor no shampoo bottles no extra shelves no glass added no glossy stone no repeated texture no flat stone no washed out floor no distorted fixtures no blurry hardware no overexposure no yellow lighting no cgi looking materials