Single Product Page Page Title Image

Hello,

I’ve been trying to change the page title image on the single product page, but I can’t find the place to edit the single title product image.

Here’s the link: http://www.artbycgi.com/shop/web-banner/

Usually, I find it under “General Settings” on a single page, but each product doesn’t have this “General Settings” option. Right now I’m stuck with a stock image.