How do you perform auto-cunnilingus?

Auto-cunnilingus is possible, you do not have to be young or skinny as many people think in order to achieve this goal, just very persistent. Begin a daily stretch routine that increases the mobility of your entire body, it really does help in the long run. Then when you feel you have increased your overall flexibility enough, try to find a spot near a wall to increase your leverage to help you with the particular stretch required to reach your goal. Patience has a big payoff here, so take your time, don't hurt yourself, and after a while, you will be able to do it as you please. (oh, and watch out for your knees, you can bonk yourself in the head badly if you start flailing)