[Wordpress issuses] supernu on "How do you change the header image in the book lite theme?"

supernu on "How do you change the header image in the book lite theme?"

When I go to dashboard --> appearance --> customize and I can change the background and the font and colors, but there is no option for me to change the header image.

I have never created a blog or web page before so I am terribly confused... detailed directions would be much appreciated.

Thank you!

The blog I need help with is thelastblueberryblog.wordpress.com.

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