Requested by @mkz
Learn 3 more ways (Four-in-Hand Knot, Half Windsor Knot, and Pratt Knot) from the full article:
  1. Choose the traditional Windsor knot as a more formal alternative to the Half Windsor.
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    The Duke of Windsor started the trend for this knot back in the 1930s. It has remained popular to this day because it projects a statement that suggests the wearer is elegant and has confidence. It's more dignified than the Four-in-Hand knot, but a little harder to tie. This knot should be worn with a spread collar.
  2. Put the tie around your neck.
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    One end should be considerably wider than the other. Make sure the wider end is on the right, and about a foot (30cm) lower than the thinner side on the left.
  3. Cross the wide end over the narrow end.
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  4. Bring your tie up through the loop.
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  5. Bring your tie back down.
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    The wide end should be resting to the left of the narrow end.
  6. Pull the wide end underneath the narrow end and to the right.
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  7. Pull the wide end through the loop, this time on the right side.
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    The wide end should now be inside out.
  8. Cross the wide end over the thin end again, from right to left.
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  9. Bring the wide end under the loop.
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  10. Fold the wide end through the loop and into the knot at the front of the tie.
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  11. Tighten the knot into a triangle using both hands.
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    Slowly tighten the narrow end to bring the tie closer to the neck. For a more modern, fashionable and casual look, make the knot a good few inches or centimeters down below the collar. For all formal occasions, however, keep the knot at the traditional distance away from the collar.