My problem as a photographer is that I'm actually really flexible, and I can arch my back really well. So I'll show a model how to do a certain pose, and then I'll get frustrated when she can't do it because she doesn't bend the way I do. Some girls, like Mia and Ava, can arch and bend like nobody's business, but everyone is different, and I have to accept sometimes that certain girls can't pull off certain positions.
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I really try to retain a respectful distance from my models, even when I'm lubing up their pussies.