CopyWriter for Childrens Dog Training Book

I am looking for an experienced CopyWriter to work over and re-write a Fun Children's Educational book that I have already written. The book has already been written in English and I require a full translation into Japenese. I would love to work with someone that already has experience with writing children's books, and has a flair for connecting whilst making it fun and enjoyable to read. I have already written about 10,000 words, and would like someone more professional to work over what I have already created. I am not looking for someone to write a book from scratch, or to move too far away from what I have already produced. The Demographic markets are children, ages 6-15 and parents, ages 30-50 years of age.