How to Tie the Half Windsor Knot
The Half Windsor knot is an extremely versatile knot. Unlike what the name suggests, the Half Windsor knot is actually closer to three-quarters the size of the Windsor knot. The Half Windsor is medium in size, nearly symmetrical and, when tied correctly, it produces a deep and substantial dimple. Best used with neckties of a medium to light thickness.
See the instruction below with photos.
* Note the opposite handedness is in the ()