I feel you’re projecting insecurities here. I love giving oral sex (to both types of genitalia but especially to the feminine) and I have taken the time to speak to lovers and ask what is good and what is not, I read a lot and watched a lot growing up with an eagerness to develop my knowledge and skills. Every person is different and I feel I am competent enough and adaptable enough to work to any person’s likes and rhythm. I’m not saying I’m some oral sex god, but do I believe I am competent and good? Yes.