Need someone whom is proficient in editing, taking manuscript and getting them ready to be sent to publishers

I am currently seeking support in finalizing and enhancing a children’s book titled The Adventures of Sizzle the Mindful Dog, which is part of a broader mindfulness-based initiative for children and families... (Budget: $15 - $25 USD, Jobs: Book Design, Book Writing, Editing, Fiction, Ghostwriting, Graphic Design, Publishing, Visual Design)