Please be aware that there will aways be a slight visual difference between a photo on a printed matte textured paper and a photo as it is shown on a backlit screen, as these are different media. So do ensure that the photos you use aren't too dark or with shadows.
Use photos with high resolution, so as to get a good quality print. If your photo is too low resolution, you will get a warning message in the editor. If your photos are over 10MB these will take some time to load - over 12MB will be too large for our site.
If you have any doubt please order a sample, if this option is available, as this is the best way to ensure you're happy with the print. Otherwise, contact us on firstname.lastname@example.org and we can take a look at your photo.