To use these Eren x Reiner posters and prints, simply pick your favorite design and find a nice spot on your wall to hang it. When handling the prints, make sure your hands are clean to avoid smudging the ink. Since the inks are archival, they'll last a long time, but it's best to keep the prints out of direct sunlight to prevent fading. You can dust the prints gently with a soft, dry cloth. And remember, you'll need to get your own frame if you want to display them that way.