Non-Fiction Book Proofreading/Editing

I am looking for a professional proofreader/editer for my 85,000 - 90,000 word non-fiction book on self-improvement/mental health (proceeds from book sales benefits charity).

This will need to be done within 7-10 days.

- The work involves fixing grammar issues, typos, spelling, etc.
- Experience in proofreading non-fiction is essential.
- Please provide a sample of your previous work or references.

Thank you very much!