To use your 'The Last Alien (Alt)' wall tapestry, you can hang it on a wall indoors to add a touch of style to your room or put it up outdoors for a unique decoration. When it gets dirty, simply toss it in the washing machine. Use cold water and select the gentle cycle, along with a mild detergent. After washing, tumble dry it on low heat. Avoid using bleach or harsh chemicals as they may damage the colors and fabric. Also, make sure to check the hand - sewn edges regularly to ensure they remain in good condition.