edit the existing image to be as photorealistic as possible ceramic tiles extend the existing light ceramic tiles on the left straight up to the hedge keep the tile format color and laying direction drainage channel add a new continuous delicate drainage channel in anthracite directly in front of the entire glass front of the annex the channel must be immediately adjacent to the lower guide rail of the sliding glass windows including the right glass element with visible frame flush with the ground with a narrow slot grate left side of the annex on the left side of the annex not just a gravel strip but the entire shaded area along the side facade should be executed as a clean high quality gravel surface no lawn there because no grass should grow in this shaded area extremely important the drainage channel does not currently exist and must be newly added it is located directly at the transition between the glass front and the ceramic tiles not in the middle of the terrace the gravel area on the left must fill the entire shaded area not just a narrow strip quality maximum photorealistic 4k keep architecture materials perspective and image format unchanged
