Private and public are different choices
A private Kyn is developed for your own use. A public Kyn can be discovered by other adults and becomes part of the wider character catalogue. Do not put contact details, passwords or private information about another person into either character instructions or public text.
Public publishing has lasting consequences. Read the creation and deletion guidance before sharing a character, especially if you expect closing an account to remove all public contributions.
Keep revisions purposeful
When a character drifts, revise one part at a time: the background, speaking style, greeting or scenario instructions. Contradictory rules can pull the response in different directions. Keep appearance instructions distinct from personality and story facts.
For a world or utility module, state its role plainly. A narrator, a world setting and a speaking character should not all compete for the same job.
A library you can return to
Use recognizable names and a clear opening premise to distinguish projects. Keep a note of the scene you are testing and the facts that must remain consistent. Account access, rather than this public explanation, determines which personal Kyns and saved work belong to you.