How to change the header image?

Someone replied to my query about changing the picture in the header, but they gave me instructions on the main logo.  However, I could not reply to the e-mail.

It was the correct form. BUT

I want to change the picture in the header see picture attached.

Grace

You could change the header image by clicking on it and the gear icon, once on the settings wizard go to the heading image tab and click on the remove option under the current image:

Once you have removed the image you will get the button to upload a new image, select the method you want to use: 

Hope this helps.