Ideally you will need to find a woman who is 3.5 inches shorter than you. This is assuming your todger is of average length and the woman's quim has average sized labia and clit.
You should also go with the pillow suggestion previously mentioned.
I assume the woman is on top.
I assume that both participants are of average mobility.
Any encounter with a shorter woman will require a dildo/ vibrator in the mouth approach which will grate on your teeth after a few short minutes, while an extraordinarily tall woman my result in asphyxiation. Agree upon a code before starting. Two taps on the buttocks, for instance, will signal distress.
In your case I am assuming the woman is a reluctant partner. You may disregard the next piece of information.
It is usual for the male to achieve climax before the woman in such practices. This should not mean that the woman is left without satisfaction. Keep going until the woman makes it clear that she has had enough. Your tongue and mouth will develop stamina over time.
*NB Breathing through the nose may cause light-headedness if done for a protracted period. Take regular breaks by, for instance, fingering the anus and clit simultaneously.
Happy depravity, perverts.
(This should be common knowledge but I state it in case the younger generation is clueless things that we old-timer were taught practically at our mother's knee)
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