We Concentrate on important elements like originality and continuity of storyline, consistency and depth of character growth, duration/term rely together with other things contributing towards the readability of the book. My proofreading system used to take months, and I needed to hire 3 freelancers. With Spines, I can do it https://whitemagicstudios.co.uk/blog/5-ideas-to-self-publish-childrens-books/