Installing a skylight over a shower can be a great idea to introduce natural light and create a more open and inviting atmosphere in your bathroom. However, it's essential to consider proper ventilation to prevent moisture-related issues. Make sure the skylight is sealed correctly to prevent leaks, and opt for frosted or tempered glass for privacy and safety. Additionally, consult with a professional to ensure that the installation complies with local building codes and is done correctly to avoid any potential water damage.