Well I'll start by saying I can tie a jelly snake in a knot with my tongue! Also that I think the best results come after certain foundations have been laid down (in other words I like to take my time to get to know what turns you on, so I can give you the best experience)
Anyhow, first I'd take you out for a meal and a chat, to see how well we got on. Then when we've decided enough and just want to go for it I'd start by kissing you and caressing you, then I'd slowly and gently remove your clothing and work my tongue, lips and hands around your body. Then when I think you're sufficiently warmed up I'd head toward your pussy, slowly running my tongue around the outer labia, then the inner labia, occasionally flicking it across your clit hood and pushing it inside you.
After gauging how arroused you're getting I'd start to concentrate more on the clit and gently inserting one finger and rubbing it along the front wall of your vagina, especially around the G spot, increasing the intensity as your arrousal increases.
Then I'd get my other hand and pull your clit hood back exposing the clit itself and continue working it with my tongue, while still working the G spot with my finger, maybe if I feel you wanting more I'd use 2 fingers.
Just when you are about to lose control I will pucker my lips around your clit and start sucking on it, drawing extra blood into it and increasing your pleasure, and I will keep doing this until at least your second or third orgasm.
After that I may take a short breather, but only to see if you want more or not, then (as appropriate) I will keep going, increasing the suction on the clit and the intensity on the G spot for the next 2 - 3 orgasms.
And so on, I've got 10 - 12 orgasms out of a girl before, so I'll keep going as long as you want!