You can pull them deeper into you simply by squeezing your leg tighter. He needs to spread his thighs slightly and not lock his knees. Push your fingers down in a rocking motion. It allows your partner easy access to stimulate your clitoris and massage the mons pubis.
Now and Zen There's not a whole lot of motion, so it's perfect for erotic embraces and intimate contact. Start with a small movement of the hips, and slowly build momentum.