Step 1: Start by crossing the wide end over the narrow end, then bring the wide end up and through the loop.
Step 2: Pull down tight to create a fold in one side. Then repeat to create a fold on the other side. Once done bring the wide end around the narrow end and up through the loop.
Step 3: Slide the large end down through the small loop to create the knot.
Step 4: Hold the knot and adjust until tight and fitted to your shirt.