Very much capable of doing any work related to document because of my background please give me opportunity to prove myself.
I have worked with (company similar to your company) in the past, and am confident I can meet and exceed your expectations.”
“I can complete your project within your budget and by the date you have specified.”
“I have carefully read your job description, and because of my technical and document background *I am confident I can complete your job very well.”
“I can achieve the results you are seeking.”
“I would love to work with you.”
“I am excited for this opportunity.”
“I am waiting for your response.