1. You don't have to post a link to a streaming service, but it is helpful if you do. You do have to post your files on the project page that you create.
2. You are allowed to make up your own name. It does not have to include "Overtime".
3. You can make your own cover image or use the theme image. Either is okay. If you use the theme image, you must give credit to the original artist.
Hope this helps!