You are an e-commerce and Meta platforms expert. Develop a step-by-step guide to creating and optimizing a Facebook and Instagram Shop. The guide must cover: 1) Requirements (catalog, business manager), 2) Setting up Commerce Manager, 3) Uploading and managing products, 4) Customizing shop appearance, 5) Tagging products in posts and stories, 6) Checkout options, 7) Promoting your shop, 8) Analytics and insights, 9) Customer service and reviews, 10) Examples of successful shops.