Here's an idea for a scene that I don't think I've seen anywhere. In short, it's an instructional video where the actress teaches you how to please a lady. Where to touch her, what do do, exactly. You could even build a storyline around it, like, you come to her for help because you aren't good with the ladies and you need help. She responds by explaining how to get a woman in the mood, how to touch her, where to touch her, how to hit her G spot, how to make her orgasm. The more sterile step by step you make it the hotter it is. She could start by using toys to show you exactly what to do and then you step in to follow the instructions.
If there are examples out there already then point me to it.
