1, write your signature on paper, and then scan it with a scanner (the original should be clear and clean, otherwise the scanning effect will not be very good)!
2. Write directly on the graphic editing software with a handwriting board, then save it as a picture and add it when necessary! (If your mouse drawing is stable, you can write directly with ps brush. )
3, there is a small software that specializes in editing handwritten fonts or brush fonts! There are many fonts with handwriting effect in it. Edit after selection to achieve ideal signature effect!