Hi Jack, thank you for your question!
One way that you can get more of the background image to show on your other pages is to change the Page Template used for those pages. Normally all of your interior pages use the Default Template, but you can make them look more like your home page by changing the template to use the Home one. Please note that if you use this technique then all of your pages will show the Call to Action widget as well.
Another way that you can get more of the background image to show on other pages is by adding an empty section with a transparent background to the top of the page content for each of those pages. Add your empty section and use the Change Background option to access the background controls. Set a custom color to use for the section background and make sure that the transparency slider is moved all the way to bottom, this will make sure that main background image will show through that section.
Please let us know if you have any other questions, we are always happy to help!