Changing the Header Image
Step 0:
Go to the WordPress dashboard. In the left-hand menu, navigate to Appearance and click on Customize. This will open the theme customizer where various settings of the site can be adjusted.
Step 1:
In the Customizer menu, find and click on the Header Option section.
Step 2:
Within the Header Option section, locate and click on Header Image. From here, can upload a new image or choose an existing one from the media library. Once the image is selected or uploaded, click Publish to save the changes.