Now, have a look at this unique and basic formal Pratt knot.
To tie a Pratt knot, start by raising the collar of mens shirts. Then draping the tie right side up with the wide end hanging approximately 12 inches below the thin end. Tie vertically from the bottom of your shirt collar, up over your natural waistline, and down the length of your pant leg.
Bring the loose end of your necktie up and loop it down through the opening in the tied part of the necktie and cinch it together. Cross the wide end over to the right with the correct side facing upward. Now bring the long end down through it and then pass it through the short opening at the back. Slide the knot at the back of the shirt and adjust it with care. Let the collar hang lower to complete the process.