Get a Coach. Tiger Woods has a coach (well sort of). John Grisham has an editor. Lawyers are professional writers. All professional writers use editors. You can hire a college or high school English teacher. You can attend writing seminars or take a writing course at a local college.
Ask for help. The reason to edit is to turn bad writing into good writing. At worst, you can turn bad writing into not as bad writing. Editors can also turn good writing into great writing. Accept all criticism.