This technique is a killer move which has gained recognition through the years because of the extra stimulation of the clitoris.
The male should be on top and should enter her. He has to then slide a few inches up so his pelvic bone is aligned with hers and the base of your penis will be rubbing against her clitoris. Both of your legs should be straight out and either beside or on top of each others. If you wish to bring him in deeper, the female can wrap her legs around his calves.
Keep your bodies close and slip your hand under the pillow or under her neck.
As he kisses and caresses her he should be using an up and down motion to rub agaist her clitoris NOT an in and out motion in regular sex.