There are a million ways to fold a pocket square, depending on your style, your mood, the fabric or the occasion-you want to make sure the fold represents what you want.
Some are quite easy and others are rather complex, but at the end of the day, it all depends on your personal taste. Here, we are not going to discuss all of them but only the most common. They will be explained step by step with written directions and with diagrams.
These are the 3 folds that I use and the ones that I recommend mastering. For the most part, it is better to avoid them because theyare complex and it often can look like you are trying too hard. Masterthese 3 at first and then go from there.
The idea here is to have a small triangle of fabric out of your jacket's pocket. Quite easy to master, the one point fold garanties you a sharp and elegant look. All you need to do is follow those four steps:
The one point fold with different fabric, even though it is easier with cotton or linen. If you have a silk pocket square, you should rather use a puff fold.
Extra tip: Once you've found the perfect fold, iron your pocket square, so it stays in place.

Just as the one point fold, the flat fold is easier to obtain with a cotton or a linen pocket square.
Here, you shall have a "puffy" piece of fabric coming out of your breast pocket.
If you own a silk pocket square, this is the fold you want to use.
An alternative fold, is to let the four corners of your pocket square out.