Create a realistic and visually appealing cover for an online course module titled 'Educational and Licensing Requirements.' The cover should feature a high-quality, photo-realistic image that subtly represents the theme. Consider using elements such as a close-up of hands holding a diploma or certificate, a desk with study materials like books and a laptop, or an hospital with a doctor or nurse. Use a professional and clean design, with a sophisticated color palette that conveys seriousness and dedication, like navy blue, white, and gold.