If you want to change the background of a picture in Photoshop, there are a few steps you can take. First, open the photo and select the Background layer. Then, use the following steps to change the background:

  1. Choose a color from the Colors palette and set it as the background color for your picture.
  2. Drag and drop an image onto the Background layer to add a new background image.
  3. Change the opacity of your new background image so that it’s hidden behind your original photo’s Background layer.