More often than not, people tend to underestimate the power of a fun and exciting 69 session. While you need not necessarily do it in that position, using your tongue for something other than talks can make it a highly pleasurable experience.
So the next time you are going doing on her, keep these tips in mind to make sure you give your partner the best experience:

Remember Where The Clitoris Is: Not only men, but even the ladies tend to ignore the importance of knowing the location of their clitoris. Make sure that you know the anatomy of the vagina, so you can correctly locate the clitoris. Educate yourself about it as much as possible. When the time comes, you should know exactly where you need to shoot your darts.

Do Not Be A Slob: Although a lady does feel great when you make her wet down there with your mouth, do not be a slimy creature and pour a river of saliva down there. Keep it tidy and limit the outflow from your mouth. Always keep your tongue wet, and you should be good to go.

Use Some Add-Ons: Eating her out need not be the only thing that you do. Your hands are free, and you can do a lot more during this time. Use your hands to stimulate her nipples, or massage her breasts. Run them all over her body, every touch feeling like a brush of heaven against her skin. You can also use a G-spot vibrator to stimulate her G-spot while you are eating her out, and it will blow her mind. You can find them here: G-Spot Vibrators

Communicate Throughout: Perhaps the most important point, and one that people frequently miss out on. Do not shy away from taking a couple of breaks in between to ask her how she is feeling. To the ladies, guide your men and let them know what type of pressures and variations are working/not working for you. This will make the entire experience a whole lot comfortable and enjoyable for both of you.

Experiment and find out what works the best for both of you. Follow these steps and then add some innovation of your own, and you will land up in a magical place where an oral session will feel better than the actual sex!