use the provided reference image as the base apply the referenced materials and textures only to the back left hand wall integrating them directly onto the existing surfaces while fully preserving all architectural structure proportions window placements door locations and all original lighting shadows colors and tonal balance on the rest of the image change the floor material and color you may change the ceiling color and the right facing wall color but do not alter any structural elements of the ceiling or the right facing wall do not modify their geometry openings or proportions do not crop resize shift the frame or alter the camera angle maintain the full original image exactly as is only apply the updated floor wall material and lighting treatments to the corresponding surfaces while keeping all other visual elements unchanged
