I already used the search feature, and couldn't find any mention of this topic. Therefore, does anyone know where I can get some free fully made book cover arts such as these ones here (can't get it for free because they have to be your publisher first): http://www.morrispublishing.com/dsn/cover/fullColorStock/full.asp
Search engines can really be your best friend. Do a search for different variations involving the term "free stock ebook covers." You'll be surprised what you might find, and it always help to dig a little past the first page. Really, you should try it.