She should be eager to learn how to please you. You should be able to see her excitement when you let her train her mouth on your cock, even when she’s struggling to take it. And she will struggle, at first. If she doesn’t, it’s because she isn’t pushing her throat far enough, and you’ll need to guide her head down, as far as she can make it without gagging and then a little past that point. That’s the only way to make sure she learns properly.
She’s training so that she can serve your cock whenever you require it and not stop until you tire of her. If she ever gets bored, she’s doing it wrong. There are so many things she can do with her mouth, and she shouldn’t even think about resting until she’s exhausted them all. Don’t let her ignore any part of your cock. She should be grateful to be allowed to serve it all.
If she’s not there to practice on you, there are still ways for her to continue her training. Of course, you’ll still need to oversee her progress. She’ll be happy to send you a video, evidence of how far she can force whatever she’s using down her throat. If she’s learned well, she’ll smile as she comes up and show you the sloppy strands of drool still dripping from her lips. Then, she’ll tell you how much she wishes it was your cock, how badly she wants to make a mess of herself for you. And how thinking about pleasing you is enough to make her wet and desperate for your touch.
She wants to taste your come and be made to swallow every drop, or feel it dripping down her face and her breasts. She wants to see herself in that moment, too, face pink and sloppy, with her hair falling out of its carefully made bun and her mouth still hanging open. In time, she’ll clean herself off, but not until you’re both done enjoying what a mess she’s become, just for you.
Source: reddit.com/r/eroticliterature/comments/l9lrkt/oralconstructive_criticism_welcome_teaching_her