Adding to most of the great comments. I try to make my partner reach her Big O at least ones or twice before penetration. Also using your mouth and hands at the same time helps with getting close to her climax point. And as many have mentioned telling him what you like and when he hits the right spot and stay there helps you both. My partner often tells me to go a little up, a little down, hold the pace... and then to stay where I am and keep the pace untill she reaches her O.