[INFP] The INFP smile

[Peter Deadpan]

Fi smiles move upward: ^ ^
Fe smiles move outward: < >

Fe smiles are more limited to the mouth area.
Fi smiles, because the face scrunches upward, tend to sneer a bit or have "marionette" lines and scrunching below their eyes (for bigger smiles). They also tend to have upper lip tension.

 

[notmyapples]

This is a great video explaining the two smiles. INTJ & INFP Coffee is a pretty good MBTI channel altogether, they have also done other informative videos on visual typing.