Cheating your way pretty…
Your left side is your best side.
Facial muscles are capable of expressing many unique emotions. Research suggests that the left side of the face is more intense and active during emotional expression. So when taking photos, it’s better to aim your cheek slightly out to the left
- Which Emotion Is The Hardest To Fake? (popsci.com)
- Study: Left-side sleepers are happier (time4sleep.co.uk)