Create a highly realistic, photo-style cover for an online course module titled 'Follow Up with Clients.' The image should focus on a professional loan officer sitting at a modern desk, holding a phone to their ear, engaged in a conversation. The environment should include elements like a laptop, notepad, coffee cup, and loan documents spread across the desk, symbolizing an active and productive workspace. Use natural lighting to create a warm and professional atmosphere. The office setting should feel modern and sleek, with a color palette of deep blues, golds, and whites to convey trust and professionalism. No text should be included. --ar 16:9  --s 750