To use these Mindkiller posters and prints, simply choose a spot on your wall where you want to display them. You can use thumbtacks, picture hangers, or adhesive strips to attach them. Make sure the surface is clean and dry before hanging. Avoid exposing the posters and prints to direct sunlight for long periods as it may cause fading. To keep them looking fresh, you can gently dust them with a soft, dry cloth every once in a while. If there are any stains, use a mild soap and water solution on a soft cloth to carefully clean the affected area. Don't scrub too hard to prevent damage.