Here are some instructions if you've got problems submitting your theme:

Title: Enter the title of the theme.
Author: Enter the authors name, leave blank if it's unknown.
Author Email: Enter the authors e-mail address, leave blank if it's unknown.
Size: Enter the size of the file in kilobytes (only digits), example 2315 = 2.315 kb or 2.3 mb.
File URL: Enter the URL to the file which should be downloaded, example http://www.server.com/mytheme.zip.
Categorie: Choose the moust suitable categorie, if no one fits choose Miscellaneus.