I've gone through the process of writing and submitting stories with the help of editors and I've helped a few authors edit their stories before submission. I would suggest you read this helpful article about self editing: https://www.writermag.com/improve-your-writing/revision-grammar/self-editing/amp/ If you would like my help, send me a note. Please note my preferences. Also, is rather not do multi part stories or stories over 10,000 words. Good Luck! Jack