Thank you very much for your skillful and excellent editing of [book title]. Because of all the hard work put in by you, [it] is a much better book with smooth-flowing text that tells its story well. It has been a pleasure working with you, and thanks again for your collaboration. Please keep in touch, and I am looking forward to presenting you a copy of [the book] in person soon.
authors thanks gratitude copyeditor copyediting editor editing EditorMom