In ROES you can choose to have the image “Fit” by clicking on the Crop or Fit button. Crop or Fit: changes the behavior of the node to crop the image or fit it entirely. The Crop or Fit button is located at the bottom of the print template screen in ROES, on the left-hand side of the zoom in/out slide bar. Please be aware that there is a second far left button that locks the image in your template. You do not want to accidentally click that button. If you do click that button, you cannot move your image at all.
The white border you see below will be on your actual print. This border will be on the top and bottom or the right and left sides of your print.