Create a layout plan of the toilet, including walls, doors, and windows. Place plumbing fixtures like toilet bowls, sinks, showers, bathtubs, and urinals. Design the drainage system, including pipes, traps, and vents for waste disposal. Indicate water supply lines and fittings for each plumbing fixture. Ensure accurate measurements and scale in the drawing. Consider spacing and clearances required for each fixture. Represent plumbing connections accurately. Follow local building codes and regulations for plumbing design. Include relevant annotations, dimensions, and symbols in the drawing. Review and double-check the drawing for accuracy before finalizing.