네 얼굴이니까 마음대로 해.

A: Do you think I’d look all right with facial hair?
B: Definitely not. “Mountain Man” you are not.
A: I think I could get away with a goatee and some sideburns.
B: 네 얼굴이니까 마음대로 해. I say you forget the whole idea.

A: 나 수염을 길러도 괜찮아 보일 것 같니?
B: 절대 아니지. 넌 ‘산사나이’ 스타일이 아니잖아.
A: 고티랑 구렛나루 좀 기르는 건 괜찮지 않을까?
B: It’s your mug. 하지만 그런 생각은 아예 잊어버리라고 말하고 싶구려.

[Additional expressions]
*Do you think I’d look all right
– In your opinion, would I be handsome / Would I be good-looking
*with facial hair
– if I had a beard / if I decided to raise a beard / with a mustache
*Definitely not.
– Absolutely not. / There’s no way. / I’m sure that you wouldn’t.
*“Mountain Man” you are not.
– You’re not a wild guy. / That image doesn’t suit you.
*I think I could get away with
– It seems there’d be no problem if I had / I’d look OK with
*a goatee and some sideburns
– a small beard and if I let my whiskers grow out along the sides
*It’s your mug.
– It’s your face. / You own your own face. / Your face belongs to you.
*I say you forget the whole idea.
– I suggest that you change your mind. / In my opinion, don’t do it.