I print square all the time, even when that is not the aspect ratio from the camera. That way all my work is uniform, and I really like the 1:1 format. I also always print vertical. When I print on 8x10, I usually print 7-1/2"x7-1/2" with 1" on the top and 1-1/2" on the bottom. For 11x14, it is 9-3/4"x9-3/4" with 1-3/4" top, 2-1/2" bottom. I usually mat the 11x14 prints on 16x20, with a 10-1/4"x10-1/4" window, 4" on top, 5-3/4" bottom. Occasionally, I will print 6"x6" on 8x10 for wider margins and a more pleasing unmatted print. I sometimes also mat the 11x14 (with 9-3/4"x9-3/4" images) on 16"x16", with even margins all around.