The Men's 3-Point Handkerchief Fold is best for elegant occasions and works best with a starched handkerchief.
Suggested handkerchiefs for this folding style:
White Mens Handkerchief With Satin Stripes
Fold the handkerchief in half.
Fold the bottom right corner up and just to the left of the top corner.
Fold the left corner up and just to the right of the top right corner to make the third point.
Take the right side and fold it towards the left.
Turn over the handkerchief and tuck into your suit pocket with the 3 points sticking out no more than 1-1.5in above the edge.