优秀的我不善于表现，英文怎么说

I am excellent, however, expressing myself is truly a tough thing for me.
内秀

excellent I am not good at expressing。

I am so outstanding that I am not good at behaving.

I am not good at the performance of outstanding
中文可以表达为：有肚才没口才啊，也可以说成很谦逊吧

二楼的有逻辑错误，...so...that...不是这样用的

I am outstanding, but I am not so good at perform myself.