Do you? Have you? Will you?

I'm curious. In my travels around the blogosphere, I've noticed a lot of you have created your own "cover page" for your WIPs, complete with title and some pretty awesome illustrations.

(Source)

That's got me wondering. Should I be creating my own? And how would I go about doing it anyway? Is it something you do for fun, or do you have a reason to do with marketing/promoting your WIP? If you don't have a cover page already, do you plan to make one? One for each WIP you work on, perhaps?

I'd love to hear your thoughts.