If you’re determined to create your own ebook covers, you need to learn what works and what doesn’t. It isn’t an overnight process, but you can do it yourself, just like many other things you’re told you can’t do. I can look at my three book covers now and see what’s wrong with them. That wasn’t possible when I was just starting out.
Learning book cover design is like learning to write. You need examples of the good stuff and, just so you can see the difference, examples of the bad stuff. The Book Designer’s monthly ebook cover awards is one place to see both. This month’s awards is a good place to start: e-Book Cover Design Awards – December 2011