Go to Media -> Library and you’ll see your header images listed there along with any other media files you’ve uploaded. You may have to page through the library to find the images. You’ll see the label “Header Image” next to the title/file name.

Once you find the image in the library you can edit in place using the WordPress image editing tools (covered in the Adding Images video).

If you need to make more substantial changes your best bet is to delete the image from the media library and upload a new image from the Appearance->Header page. That’s not an ideal workflow, but that’s what we’re stuck with for the time being.

Glad to hear you’re finding the videos helpful.

I am using theme Twenty Eleven 1.3 and I have uploaded my own images and set them to random. My question is how to edit them. I would like to delete one of the present images and to change others as I go forward.

I also wanted to let you know that your videos are extremely helpful and make learning WordPress very enjoyable.

Dennis