Landscape design for a 12-meter terrace involves planning and creating a visually appealing outdoor space on a flat area that is 12 meters in width. This typically includes considerations for soil preparation, plant selection, irrigation systems, seating areas, and decorative elements to enhance the aesthetic appeal and functionality of the space. Key aspects of such a design may include terracing, grading, water features, lighting, and the integration of plants suitable for the local climate and soil conditions.