Expression
Facial Expression
noun
The thing that is attached to your face isn't a big booger or anything like that. It's something that's always there. It's your expression.
かおつき
The readings are both kun'yomi, but they're the readings you've already learned when you learned the kanji.
このころのたえ子ちゃんは、まだ顔付きが子どもっぽいね。
Taeko still looked like a kid back then.
あのミニチュアハスキーは、とてもりりしい顔付きをしているね。
That miniature Husky has such a gallant facial expression.
うわぁ、すっかり大きくなったね！顔付きはお父さんそっくりそのままだ。
Boy, have you ever grown up, young man. You are the spitting image of your father.