[SOLVED] I just want to put one simple photo for my header image is that possible

I just want to put one simple photo for my header image is that possible with this theme? I am not swift when it comes to coding or configuring like I have seen posted here in relation to header images. I just want to put my own header photo if possible or if that involves a lot of configuring then if it is simpler using multiple photos I would like to insert the ones of my own choosing. The few steps involved the better. I have ADHD and complicated steps are difficult for me.