Leave about 4 to 8 inches (10.16 to 20.32 centimeters) hanging off of the left side of the corner. Keep the rest of the ribbon on the spool on the top edge. Take the spool-side of the ribbon and pull it behind the top right corner, down towards the bottom right corner. Keep your thumb over the ribbon on the top left corner so that it doesn't fall off. Keep the wraps nice and snug so that they don't slide off of the corners. At this point, it would be a good idea to take a moment to adjust the positions of the wrapped ribbons on each of the corners. If they look like they are slipping off, pull them further from the corners. Bring both ribbons towards the center of the top left corner. Measure the spool ribbon against the other ribbon, and cut it down to match. Cross the left ribbon over and under the right, then tug on both ends to tighten them. Fold both ribbons into loops, then cross the right one over the left—just like tying a shoe! Once the bow is tight and secure, snip off the excess ribbon at the tails. For a fancier touch, cut them at angles or into notches.
Drape your ribbon across the top left corner of the box. Wrap the ribbon behind the top right corner. Wrap the ribbon across the bottom right corner and under the bottom left corner. Bring the ribbon back towards the top left corner. Cut off the excess ribbon. Cross and tie the ribbons. Cut off the excess ribbon.