Expression: A natural reaction as if just heard something and feeling a bit shy

Change the deliberate smile to a natural reaction upon hearing something, with a hint of shyness.

The corners of the mouth should show only a very slight upward curve, or the lips should be slightly parted. The focus is on the eyes: there should be real, subtle movement in the orbicularis oculi muscle, with the lower eyelid slightly raised and faint creases appearing at the outer corners of the eyes. The inner part of the eyebrows can be slightly lifted, conveying a touch of shyness and hesitation.

The difference between a genuine smile and a fake one lies in whether the eyes move. If only the corners of the mouth turn up and the eyes remain unchanged, it's a typical posed look.

The left and right sides of the face should not be perfectly symmetrical; one corner of the mouth can be slightly higher than the other.

The gaze can naturally shift slightly away or downwards, reinforcing that moment of being 'caught off guard'.

Keep all other parts completely still.

Avoid: a wide grin showing a full set of teeth, a completely expressionless face, only the mouth smiling without eye movement, perfectly symmetrical facial expression, altered facial features.

Translated from Chinese by AI.

把刻意的微笑改成剛聽到什麼的自然反應。

嘴角只有很小的上揚,或嘴唇微微張開一點點。重點在眼睛:眼輪匝肌有真實的細微牽動,下眼瞼略微抬起、眼尾出現淡淡的摺痕,眉毛內側可以微微上提,帶一點害羞與遲疑。

真笑與假笑的差別就在眼睛有沒有動,只有嘴角上揚而眼睛不變,就是典型的擺拍感。

臉部左右不要完全對稱,一側嘴角可以比另一側高一點點。

視線可以順勢略微偏開或垂下,強化那個「被說中」的瞬間。

其餘部分完全不動。

避免:露出整排牙齒的燦笑、完全面無表情、只有嘴在笑而眼睛沒有變化、表情左右完全對稱、五官被改動。