[Grammar] business card request

[Karthik ajay]

Dear sir,
I request you to please approve the business card.


This is correct?

 

[tedmc]

I guess you are writing to your superior.

Better to say:

Mr/Ms xxx
I would like to request your approval of the business card.
May I have your approval of the business card?
Please approve the business card (attached).

not a teacher