Once your site is built it's a good idea to add new photography every 3-6 months to show search engines that your active and also keep the content fresh for your users. 
The video below walks you through swapping out images within a page of your website. This is not difficult, but there are a few key things to keep in mind: 
  • Check the size of the current image in the media library
  • Size the new image BEFORE you upload it the media library