I delivered a request not too long ago, but it hasn't been uploaded to the booru yet. Is it okay if I do so, or are only admins allowed to? I ask because I see that it's mostly they that do that.

Nope. Other people can upload, too.
Also, do you mean this http://the-collection.booru.org/...t&s=view&id=28114 ?

It's under this entry http://the-collection.booru.org/...t&s=view&id=28063 as a child post. Since you mentioned in the thread that it was a followup. But I can make it as a stand-alone post, if you want.

If you feel like it, sure, but if not, no harm no foul. I was just worried no one posted it. Thanks for the help, man.