The Ears Rule
Taiwan expects a front view with the ears visible.
Taiwanese photo guidance calls for a bareheaded front view with the ears shown. This is stricter than most countries, which only require the face from chin to forehead, and it is easy to fail without noticing if you have long hair.
Tuck your hair behind your ears before the photo is taken. It costs nothing and removes one of the more annoying reasons to be sent back.
