One unusual expression is that is no skin off my nose.

VOA: special.2009.09.13

I broke my nose, so I was injured.

我断过鼻梁，所以受伤了。

我喜欢运动 - SpeakingMax英语口语达人

I have a Roman nose. I will look stupid with a little nose on my face.'

VOA: standard.2010.07.22