Because this has happened several times.

Here's what I mean by "unapproved":

-I send you the final image and ask you if it's alright and/or if anything needs changed.
-I see that you have read my note.
-You don't respond within 24 hours from when I see that you opened the note.

So, if I see that you read my note, I'm going to assume you saw the final image, and if I don't get a reply, I'm going to assume you're happy with the final image, and then I'm going to upload the hell out of it :^).

BUT WAIT, this doesn't mean I won't work on it anymore if, for whatever reason, you were unable to tell me what you wanted changed between the time you read the note and when I uploaded it. I'd be more than happy to. You just gotta understand, I'm really antsy when it comes to uploading stuff and like to share the things that I draw as soon as I can.