Hi,
I think I'm the best candidate for your project because-
1. I've editing, writing and proofreading experience. I've been doing them since my school days.
2. I've good vocabulary & grammar. So, you don't have to worry about people not being able to understand the content.
3. As per your requirement, I can use simple language with not too long and too unusual words, this approach is best if you intend your content for a large readership. Or, if your readers are going to be from a specific background, I can use sophisticated language too. Both ways are fine with me, it is completely dependent on the project's requirement.
4. I am an avid reader and have read works of authors across all genres. Writing is more than a hobby for me , it is a way of life.
5. I have done a few fiction pieces of my own, if you'd like, I can send some excerpts.
6. With me as your ghostwriter, you don't have to worry about hiring an editor or a proofreader. My content will be 100% error free, flawless.
7. I'll be sending you drafts periodically to take your suggestions.