You should not have do anything other than choose a size that matches as close to your image as possible.
Order HD Chromaluxe® Metal Prints
Print your artwork or photography as custom-size metal prints. Using the dye-sublimation process, your image is fused to the surface of rigid aluminum panels. These provide a modern look when decorating your home or office. Choose from multiple metal surface options. Order it framed, with a float wall mounting or even with a tabletop easel back.