Why doesn't my theme appear in the Project Application queue? What did I do wrong?
It doesn't appear because you didn't create an issue in the Project Application issue queue, but in the issue queue for your theme.
To create a issue in that queue, go to https://www.drupal.org/project/issues/projectapplications and click on Create a new issue.
Since I am a Drupal.org webmaster, I have already moved the issue in the correct queue; you don't need to do anything more.