How does PS make handwritten fonts

First of all, you can ensure that the effect of the paper on the screen remains unchanged, and then directly input the handwritten font, which can be downloaded through the website. In addition, you can write on white paper yourself, scan or take photos, turn the paper white in ps, put it in the position of the text in the above picture, and then give the picture a positive superposition effect, and it's over (if there is an original text on the picture, you have to erase it with a stamp ~)