To use your Sushizilla posters and prints, you can easily hang them on your wall using a nail or a wall - hanging strip. Make sure to choose a clean and dry surface. When it comes to maintenance, keep them away from direct sunlight to prevent fading. You can gently dust them with a soft cloth if they get dirty. Avoid using any harsh chemicals or cleaners on them. If you need to store them, roll them up carefully and place them in a tube or a flat storage box to keep them in good condition.