To prevent the appearance of deep lines on the inside-edge from cheek bones to mouth:
Stretch your mouth in protruding O and make long O sound for ten seconds and repeat it for ten times.
To remove your double chin:
Tilt your head back and move your chin muscles up and down 20 times. Repeat for 10 times at least.
To release tension from jaw lines and fine lines around eyes:
Open your mouth and eyes really wide and close them tight for 20 times.
To keep your cheek bones defined open your mouth and try to join your lips:
Hold it for 10 secs. Release it and repeat it again for 10 times.