Well, my personal philosophy is to ask her what she likes. Ask her to guide you. As far as etiquette, don't act disgusted or complain about anything, you should be fine. If she's not willing to tell you what she likes, just start exploring. I assume you know from other types of sex you may have had with her what types of pressure, strokes, etc. she likes. If you usually use your fingers on her clit, try doing the same types of things with your tongue. Some girls like circles around their clit, some like flicking, lapping, some like lots of pressure, some like light, fluttery touches, some like fast or slow. Try different things until you get a positive reaction from her, keep trying variations until you find what makes her come. It'll be a lot easier for both of you though if she'll give you some guidance. Just explore and play and talk to her if she's willing. Enjoy it. I personally find it one of life's greatest pleasures. less