I'm not here to tell you what to do. If you've already made a gemsona that you are proud of and happy with, you don't have to change it based on what I've written here. This is for people who want to make a gemsona or to polish up their ideas. I'm just telling you what I've observed in the fandom so you can know what not to do to make other people send hate. I'm only trying to help.
Also, Steven Universe is a product of Cartoon Network and Rebecca Sugar, the cover page of this guide is from Doll Divine, and I have only made this as an unofficial guide book to creating original characters for the world of Steven Universe.