There's not much to it. I check your website for typos and grammatical issues, and you get some peace of mind, knowing that there are no embarrassing errors on your website.
I was previously the head of content for a billion-dollar company, and I have many years of experience in proofreading. Trust me, I'll find all of your typos.
I'm not a lawyer, so I generally don't review legal language like terms of service, and I generally don't review blog articles or PDFs unless we make an arrangement for an extra fee.
Refunds
If I review your website and miss an important typo, send me an email and we'll work it out. I will make sure you are happy with my service.