Hillary! has an unfortunate habit of pulling back her head when she is confronted by conflict. This is a natural human reaction that she is going to have to un-learn. It makes her chin look very weak and does horrible things to her neck.
Right now, you can bet that the coaches over at Team Clinton have her in front of a mirror, practicing leaning forward, dropping her left shoulder, and sticking out her chin when confronted. This "leading with the chin" posture denotes agressiveness and strength, and will have the side benefit of elongating her neck and smoothing out her skin. It avoids the "Q-Tip with Eyes" look we see above.
What does dropping the left shoulder do?
It seems Ol’ Shickelgruber himself was no natural performer. He went to considerable lengths hiring professional coaches and rehearsed his stage moves and speaking voice.
He was also a master at the seductive interview. He could charm the pants off journalists and diplomats (when he felt it to be in his interests).