What is a five seven eleven mounting rule?

Question

I'm in 4-H and I got a judge's comment to mount my 3 pictures on a horizontal 11X14 inch black poster board using the 5-7-11 mounting rule. Please help me out and give suggestions thanks!

Answer 1

My guess is that the judges are asking that entrants to submit 5 by 7 inch photos (a standard size photo) mounted on an 11 by 14 inch board. (a standard size mounting board)

If portrait configuration leave a 3 inch border on the top and sides and 4 inches at the bottom.

If landscape configuration center the photo with 3 1/2 inches on each side and weight the bottom leaving a little more space underneath the image than above it.