I notice that Fi tension can be really subtle. Maybe when cheeks are more round and chubby, it just seems more difficult to spot, like it comes and goes.
Therefore, I pay attention to the shadow created by their cheeks around their nose area. If that area seems dynamic as in the shadow gets darker and lighter depending on the user's emotions...then that is what I see as Fi tension.
Fi-lead Song Hye Kyo showing lots of Fi tension:
(very tight cheeks)
And then not so much Fi tension: (not so tight cheeks)
Her neutral face can have very flattened cheeks, so the Fi tension creates the appearance of protruding cheekbones, when it is in fact more muscle. So when I see flat cheeks suddenly becoming puffy and tight, creating darker shadows near their noses (which can disappear too), I can assume Fi tension might be at work.
"I will never assert that an individual must be the type I think they are. I am human, I still have subjectivity. I also think it's possible that an individual can be aware if they have been mistyped. Therefore, when it comes down to it, the ultimate decision to accept/reject a typing should come from that person themself. For better or worse, it is ultimately up to them...or some kind of perfect brain scan. haha"
-IluvHSJ
"I will never assert that an individual must be the type I think they are. I am human, I still have subjectivity. I also think it's possible that an individual can be aware if they have been mistyped. Therefore, when it comes down to it, the ultimate decision to accept/reject a typing should come from that person themself. For better or worse, it is ultimately up to them...or some kind of perfect brain scan. haha"
-IluvHSJ
XD Thanks for posting this. I've gotten a lot better at noticing Ti vs Fi, and I notice that with my cheeks as well. It's been a great source of confusion over the past few days.
It has been said that Fi can cause a look of sorrow. Then I found this, entire tumblr dedicated to Kanye West and him looking sad without even trying. Isn't it just his Fi sorrow, unseelie Fi face? Anyways, his pouting is getting attention. Lol.
"I will never assert that an individual must be the type I think they are. I am human, I still have subjectivity. I also think it's possible that an individual can be aware if they have been mistyped. Therefore, when it comes down to it, the ultimate decision to accept/reject a typing should come from that person themself. For better or worse, it is ultimately up to them...or some kind of perfect brain scan. haha"
-IluvHSJ
Eww. What did my photobucket do? I'm gonna try to see if I can find another place to host gifs, so I can replace all the gifs that have vanished...maybe. what a pain...
Edit: I'm now gonna try MediaFire. For all members, DON'T use photobucket for your gifs.
"I will never assert that an individual must be the type I think they are. I am human, I still have subjectivity. I also think it's possible that an individual can be aware if they have been mistyped. Therefore, when it comes down to it, the ultimate decision to accept/reject a typing should come from that person themself. For better or worse, it is ultimately up to them...or some kind of perfect brain scan. haha"
-IluvHSJ
(very tight cheeks)
(not so tight cheeks)
(cheeks are not really tight)
(tight cheeks, darker shadows by nose area)
vs 
