Whenever you’re satisfied with the look of the eBook, you can publish it. This does not publish your eBook to Kindle Immediate Publishing, but creates the .kpf file and you can upload that file to Kindle Direct Publishing, as opposed to your Term file. Also, KDP tends to make self-publishing https://maplepublishers.com/blog/how-writers-work-in-ease-with-the-professional-offering-illustration-services/