This site does not justify the quality of photography, When ordering prints ,The crop is far to much. Canvas print should have 1/4 in over lap and an inch for staples for the strtcher. here on most sizes you lose allot odfthe image ,
You might consider trying a color wrap instead of a classic. The edges will be wrapped in a color of your choice instead of the image. Also, to avoid losing too much of the print to cropping be sure to choose a print size with the same aspect ratio as your image.
If you have a concern about a specific print you received, please feel free to shoot me an email (firstname.lastname@example.org) and we can talk specifics.