Your blog header doesn’t need to be fancy. The name of your blog, maybe a witty line showing what you blog about, and some sort of graphic that matches. This type of header is quite simple to do, and costs $7. If you would like a very detailed header, including customized graphics, it will cost $15.
Please click on this image to see it full size and in use at Twitter Mamas. It has a transparent background to allow it to be used on any background image, like the blue with white polka dots on Twitter Mamas.