Contain appropriate content in accordance with the general regulations of the wiki linked above.
Be posted in the appropriate location of the wiki's mainspace (articles, galleries, etc.).
Any files that are unofficial and/or non-canon to the Miraculous Ladybug series, such as fan-art and edited files, must either be posted on a blog, user page, board thread, or talk page. Unused, but official concepts are exempted from this rule.
Be used somewhere on the wiki. If unused it will be subject to deletion by an admin or image controller.