[not mine, but I made a few changes]

Aries: their laugh

Taurus: the way their face lights up when they smile

Gemini: their small little smirks when they're right

Cancer: the way they cover their face when they laugh

Leo: the crinkles around their eyes when they smile and laugh

Virgo: how they blush when embarrassed

Libra: the way they giggle quietly

Scorpio: their smiles and laughs

Sagittarius: their look of glee

Capricorn: their face when they're happy

Aquarius: the way they look while laughing

Pisces: the way they look while daydreaming