To use your Keyblade Master Sumi - e poster or print, first choose a nice spot in your room like on a wall or above a desk. Clean the area where you'll hang it to make sure it sticks well if you're using tape or looks good in a frame if you add one later. When hanging, be gentle to avoid any creases or tears. As for care, keep it out of direct sunlight to prevent the colors from fading. If it gets dusty, you can use a soft, dry cloth to gently wipe it. Remember, since frames aren't included, you can pick one that matches your style and decor to make it look even better.