Steps
-Put the pants on and mark with chalk, or a pin, where you want to shorten them to
-Remove the pants and use a ruler to measure where the pants were marked to be sure they are the same length
-If needed to shorten more then 3 inches, it's best to cut the excess length off, making sure to keep an extra few inches to fold over
-Turn the pants inside out, and fold the pants over twice, to where you have the pants marked; make sure to measure again to be sure they are the same length
-Apply a layer of the "ok to wash" fabric glue all around the inside of the fold
-Allow to dry completely; wait about 5 days to actually wash the pants