You can have the edges of your canvas (where it wraps around the edges, top and bottom) either white, or ‘gallery wrapped’ where the image itself wraps around all the edges. This can look fantastic, but it does mean you will lose part of your image.

If we feel the image you have chosen does not suit being gallery wrapped, ie. too much of the image would be lost, we will advise you that a white edge would be preferrable. Ultimately though, the choice is yours.