Non-Fiction Book Refinement for Self-Publishing

I am seeking a skilled professional to help refine my non-fiction manuscript for self-publishing, both in paperback and ebook formats.

Key tasks include:
- Proofreading and grammar correction
- Formatting for paperback and ebook
- Content editing and enhancement

I have a general idea of style and formatting but need professional input. Ideal candidates should have:
- Experience in editing and formatting non-fiction works
- Knowledge of self-publishing processes and requirements
- Strong attention to detail and a good command of language
- Ability to work collaboratively and incorporate feedback

Please provide examples of previous work and an estimated timeline for completion.
Attached files are examples of some of my books. I am trying to write 5-10 books a year.