While I understand new users do not make their own edits for a variety of reasons, editors, mods, and admins all have their own priorities. How can you get your requests accepted? Provide some context. Make a point. Focus on high-level concerns.

Your request was about heterochromia. How would you like it to be put in the article?

It isn't a high level issue it's just easy to diagnose, and could be put in the appearance section, or added to trivia if appearance doesn't exist. Maybe as "Luna appears to have heterochromia, signified by a green iris on one eye and a pink iris on the other,but it hasn't been made official"

I added it, in the future you are able to make edits yourself.