Using your 'The Wave of R'lyeh' wall tapestry is super easy. You can hang it on any wall inside your home to add a unique touch to your decor, or outside if you want a special look for your patio or garden. When it comes to cleaning, just toss it in the washing machine. Use cold water and set it to a gentle cycle, then add some mild detergent. After the wash, put it in the dryer on low heat. Remember, even though it's durable, try not to scrub it too hard during cleaning to keep those vivid colors and sharp lines looking great.