Your photograph may suit a solid black border on the edges rather than a white border. This option looks particularly great with darker photographs or with our free black and white effect. As with the white border option, you won't lose any of your photo around the edges so you are able to still achieve a photo on canvas even when the photo focus point is cropped close to the edge.
Have a look on the Canvas Editor, which will show you how all the border options look, as well as allow you to scale and position your image.