Regarding revising resume and cover letter

Greetings,

I wanted to know if someone is great for revising cover letter and resume. Being knowledgeable of how to help me to create a powerful resume and cover letter I can utilize within the future towards career.  For instance, a template that is professionally done well including revise my current one that need help to be polish.

If chosen to do this task I would review to see meeting expectation. If not, then would ask for money back. Plan and simple. As well, I will sent the document within the personal message whoever I chosen to do so. 

thank-you