Giving Head 🙇🏽‍♀️

Soooooooo I recently broke out into the whole ‘sex’ scene and my partner had expressed to me that he’d like it if (only if I were comfortable) gave him head. Is there a right time way to do it or is there some type of sequence to follow. any tips on how not to gag as well would be nice.

I feel so innocent. Help a sista in need out.