Many women find their partner licking, sucking, biting or blowing on their nipples really turns them on. It can be so arousing that they can even have an orgasm.
You can try licking or stroking your partner’s breasts in circles. Start off with big circles around the breast, and then with each circle gradually get smaller until you’re circling around the nipple. Try gently sucking or nibbling on her breast while fingering her. If you’re not sure what she likes, get her to demonstrate on you.