You need to have a look at the artwork cover section on lulu. Upload a simple cover to at least go through the process. Use one of the colored backgrounds or upload your own. You can always change it. More work on songs.
We are working on your CD. Specifically, recording songs and mixing them down. How many do you have? Do you want me to check what you have? Are you redlining. Do you know what redlining is in recording? Songs should be finished in about two weeks