Can someone help clarify what it means to 'tighten the corners' or the lips?
There are several things I find I can do...
1: do a hard smile. Corners are now set tight via a horizontal pulling of the lips.
2: Close down on the sides of the lips... squeeze them together in the sides via a vertical use of the muscle/jaw
I added a random internet picture with arrows exactly where im referring to 'pushing down'