Learn how to do a double loop and 19 different ways to tie a scarf. How to tie a scarf in double loop? Extended length-wise, wrap the scarf around your neck two times. Leave long equal tails to the scarf on either side of your wrap. slide the scarf, so one side of the scarf tail is longer than the other. Take the long end of the scarf and knot it around the shorter side of the scarf. Check out the other ways of tying a scarf in this step-by-step illustration collection.