Educational Book Editing for Non-native Speaker

I'm seeking an editor for my non-fiction educational book. Ideally, I'd prefer someone from the Jehovah's Witnesses group.

Key Requirements:
- Edit for clarity and fluency, as English is not my first language.
- Remove any overlapping content and redundant sentences.
- Ensure the content is smooth and easy to read.
- Use American English

Ideal Skills and Experience:
- Experience in editing non-fiction and educational content.
- Strong command of American English.
- Background or familiarity with Jehovah's Witnesses writings is a plus.
- Professional editing experience with non-native English speakers.

Please provide samples of previous work, especially with similar projects.