When I first set up my WordPress site, I was excited to learn that I could have several header images which would change every time a new page was viewed. But over time I realized that some of the banners did not go well with certain pages so I reverted back to a single header image.
At the same time, I always wondered what the featured image setting was for. I had tried setting up images as featured but it had no effect on how the pages were displayed. After a little research, I discovered that this function was to enable a featured header image for the page – just what I had been looking for. All you have to do is make the header images you want, taking note of the header size that your theme requires. On my website my Twenty Ten theme requires a header size of 940 x 198 pixels.
The next step is to upload the new headers you just made into the image library. Then edit the page you want to change. Click on the set featured image button and the image library will open. Select the header you want to use for that page and then click on the set featured image button. Next click on the blue updated button on your the page you are editing and you are done. Sounds complicated but its a really simple way to customize your website and blog and add visual interest that relates to the subject on your page.