Hi, I can edit your book to the perfection.
I graduated in Political and Commercial Sciences, and have been working for 25 years for Cathay Pacific Airways and later for Northwest Airlines in the Sultanate of Oman.
My English is perfect, as well as my vocabulary and spelling. I am used to write letters of all sorts since I was handling all aspects of these airlines (commercial, clients, legal with Omani authorities etc...).
Give me your project and you will be pleasantly surprised.
I can assure you of an excellent job, no googling, no copy-paste and no sub-hire.
I could claim having a team and so on, but no, I just do it all myself, and I do it fast and excellent.
Thank you very much,
Best regards,
Hoda.