keep everything exactly the same in the rendering do not change the layout walls doors windows shower niche plumbing fixtures wall tile lighting vanity or any materials only change the color of the tile floor and wall to make them more white but keep the texture the same and make the texture a more prominin on the white so you can see it on all the tiles floor and walls reduce the number of grout lines so the tiles appear large format keep the floor tile layout straight or in a staggered pattern do not change the tile material color layout keep everything else exactly the same make the final image look like a realistic photo rendering with natural lighting and soft shadows