Can you briefly explain your printing process?
I used a traditional darkroom. I print on #3 or #2 graded paper using a cold light head. When I print, I'll often print each image full frame, with "sloppy" borders, created by a special negative holder I have for the film. When I do crop an image, I try to preserve the aspect ratio of the film frame.
As with any hand process, the actual item may vary slightly from the scanned image. I try to make sure each image is printed the same as the last image, but it may vary as much as 10% in contrast because this is dependant on the temperatures of the developers I use.
I also use white space around the iamge as well as inside the image. When you receive a print unmounted, plase take care in arranging the photo in the mount and be sure to open the matte enough to show the image's edges.