好像决定hiring的主要因素是你在interview时的表现，现在再在thank u letter里面弥补没回答好的问题不太好。多提些positive的话。总之thank u letter 可能会有锦上添花的作用，雪中送炭的可能性不大。

Nod. For future opportunities bahh.

It is the best for you to express your confidence and other never mentioned skills you have, which is tightly relating to the job you are applying, in your follow-up letter.