Simple Darthipedia:Promoted article Policy

To ensure the quality of articles promoted to either featured or good status, it is not allowed to make unsubstantial edits to them. Multiple violations may result in a block.

Exceptions to this rule are:
 * Quality edits that do not break the flow of the article
 * Minor additions to the infobox ...minor additions!
 * Links to new relevant articles in the See also section at the bottom of the page

If you wrote a new article and want to make sure people read it: Don't go to an already featured or good article and spam it with links to your article in the hope people will read it sooner from a high traffic page. Do update DidYouKnow accordingly so your new article will be visible on the main page (which is probably even more high traffic)