search exercises on you tube for chin and neck. I think I have seen yoga videos before regarding this :)
Hi there,
You can make your chin appear slimmer by having an appropriate haircut, correct posture. You can do chin lifts, rolling neck movements. Maintain a healthy lifestyle by exercising regularly and consuming a balanced diet consisting of fruits and vegetables. Drink 2-3 litres of water every day .This is merely an advice. For more queries and assistance visit a doctor. I hope it helps.
Best luck and regards!