How to cut rice paper into fan and round fan?

First, determine the size of your sector and draw a picture with the computer. You can draw it with illustrator or other software and print it out. If necessary, it can be spliced and printed. Then find a piece of cardboard, print the pattern on the cardboard with carbon paper, and then cut the cardboard into a fan shape. Just use this cardboard as a mold when cutting the sector in the future.