How can you tell if you are tilting your head up or down?

[lmfao]

Or, how can you tell what your ”neutral” y-axis head tilt is. Idk if my midface looks more compact because ive started tilting my head up more

 

[.👽.]

Let someone take a pic of u from the side

 

[lmfao]

Let someone take a pic of u from the side

Yea but how do i tell from that image