Hi Ben,
On the same subject, after some fiddling about, I’ve been able to add a background image using Customizer/Header/Header Style/Background Image/Select Image.
You can see it here : http://838collinsstreetmelbourne.mypressonline.com/
However, when the pages adjust for mobile, the image (logo) appears behind the site title.
Is there a way to stop the header background image appearing for smaller screen sizes. That would fix my problem for the moment.
Thanks Ben