Classic Folds:
Presidential Fold: This is a simple and elegant fold that works well with any occasion. Lay the pocket square flat, then fold it in half diagonally to form a triangle. Fold the triangle in half again, then tuck it into your pocket with the pointed end facing up.
One Point Up: Another versatile fold, the "one point up" is a good choice for most occasions. Lay the square flat, then fold one corner down to meet the opposite corner, forming a triangle. Fold one side of the triangle in half, then fold the other side in half again to create a smaller triangle. Tuck the folded triangle into your pocket with the point facing up.
More Elaborate Folds:
Three Point Fold: This fold creates a visually interesting three-peak design. Lay the square flat, then fold the bottom corner up to meet the top corner. Fold the left corner up to meet the right side of the top point, then fold the right corner up to meet the left side of the top point. Tuck the folded square into your pocket with the points facing out.
Winged Puff Fold: This fold has a unique triangular shape with two folds down the center. Lay the square flat, then fold the top corner down to meet the bottom corner. Fold the right and left corners in to meet the bottom corner, forming a smaller triangle. Fold the left, right, and bottom corners of the smaller triangle in towards the center. Tuck the folded square into your pocket with the unfolded corner facing out.
You can find many other pocket square fold variations online or in men's fashion magazines. Experiment with different folds to find one that suits your style and the occasion.
Here are some additional tips for folding pocket squares:
Use a crisp, ironed pocket square for the best results.
The size of the fold should be appropriate for the size of your pocket.
Don't overstuff your pocket; the fold should be slightly puffed out.
Adjust the fold until you are happy with the look.