Lick hard now and press into her skin. Gently pull the pussy lips away and flick your tongue against the clit, hood covered or not. Do this quickly. This should cause her legs to shudder. When you sense she's getting up there toward orgasm, make your lips into an O and take the clit into your mouth. Start to suck gently and watch your lady's face for her reaction. If she can handle it, begin to suck harder. If she digs it, suck even harder.
Go with her. If she lifts her pelvis into the air with the tension of her rising orgasm, move with her, don't fight her. Hang on, and keep your hot mouth on her clit. Don't let go. That's what she'll be saying too: 'Don't stop. Don't ever stop!'
There's a reason for that, most men stop too soon.
There's another thing you can do to intensify your woman's pleasure. You can finger-fuck her while she's enjoying your clit-licking talents. Before, during or after. She'll really like it. In addition to the erogenous zones surrounding her clit, a woman has another extremely sensitive area at the roof of her vagina. This is what you rub up against when you're fucking her.
Well, since your cock is pretty far away from your mouth, your fingers will have to do the fucking. Take two fingers. One is too skinny, some women like 3 fingers. ASK HER! Some women even like anal stimulation while you're on their clit, ASK! Make sure your fingers are wet so you don't irritate her skin. Slide them inside, slowly at first, then a little faster. Fuck her with them rhythmically. Speed up only when she does. Listen to her breathing. She'll let you know what to do.
If you're sucking her clit and finger-fucking her at the same time, you're giving her far more stimulation than you would be giving her with your cock alone. So you can count on it that she's getting high on this. If there's any doubt, check her out for symptoms. Each woman is unique. You may have one who's nipples get hard when she's excited or only when she's having an orgasm. Your girl might flush red or begin to tremble. Get to know her symptoms and you'll be a more sensitive lover. When she starts to have an orgasm, for heaven's sakes, don't let go of that clit. Hang in there for the duration. When she starts to come down from the first orgasm, press your tongue along the underside of the clit, leaving your lips covering the top. Move your tongue in and out of her cunt. If your fingers are inside, move them a little too, gently though, things are extremely sensitive just now.
If you play your cards right, you'll get some multiple orgasms this way. A woman stays excited for a full hour after she's had an orgasm.