A fantastic technique for pleasing a woman is the V Sign technique. You can position yourself at any point to gain access easily to the clitoral area but standing behind her and reaching around the waist is probably best. The V Sign come from spreading your middle and index fingers which then slide either side of the clitoral lips running towards the perineum. The underside of your v will now be stimulating the two lengths of the clitoris and moving your fingers back and forth will gently tug at the main clitoral nub and begin a subtle arousal to get any girl in the mood. If she wants more direct stimulation gently circle the fingers over the entire area without pressing to directly over the sensitive hot spot itself, you want her gasping for more!
Once she is ready for full blown orgasmic masturbation try using the palm of the hand instead of the fingers. As the V Sign stimulation affects the wider area of the female genitalia a full palm massage can build to an amazing climax.