Wikipedia:Essays

You do not have to be the one who originally created an essay in order to improve it. If an essay already exists, you can add to, remove from, or modify it as you wish, provided that you use good judgment. However, essays placed in the User: namespace are often—though not always—meant to represent the viewpoint of one user only. You should not normally edit someone else's user essay without permission. To be on the safe side, any edits not covered by REFACTOR and MINOR should not be made without agreement with the author. More radical edits should be discussed with them on the talk page. If the original author is no longer active or available, then a consensus should be sought from the other editors who have edited the essay. Another option is to just write a different essay.

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