Dear Sir,
What I understood is that you are some kind of a contractor and want to portray services you offer with brief profile information to your clients in a covering letter.
If that is correct I can positively take up this activity. You can provide me more details about job description as well.
Studying the contents I would prepare a write up and deliver you in two working days or before. I may deliver earlier also however I am not aware of study time for material provided by for write-up.
Actual letter writing will not require much time.
Dedicated effort is guaranteed.
I would charge $20 for this as a project.
With Regards,
Sumant.