My company asked me to write a self introductory letter to proof my qualifications for get a promotion. I should request the promotion that I have required qualification and proofing those.
How do I write that letter

Hi, coolfly!

Below, is a draft of such a letter that you might use as an example. You could tailor it to suit your needs.

Dear [the person or people to whom it will be addressed],

Please accept this correspondence as an indication of my interest in obtaining a promotion to the position of [ ? ].

In support of my application for the position, I submit the following to show how my experience qualifies me to be considered for the position.

(You then would go on to list your qualifications and experience.)

I look forward to an opportunity to discuss how I might best serve the needs of our company in the position for which I have applied.

Sincerely,

[Your Name]