This skill has nothing to do with the real awareness of what you are doing. As long as you act confidently, few will ask questions. People assume and accept things differently, and while you act as if everything is under control, they assume that everything really is, that you know what you are doing. This causes trust, responsibility and respect. But!
Between confidence and arrogance there is a fine line. Concentrate on being simple with people, avoid arrogance.
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And in general, as they say, be simpler, and people to reach out to you (not simpletons, of course). This means that you need to be able to recognize mistakes and take responsibility for them, and also fully recognize that one of your subordinates may well be better than you.