If the work is written on rice paper with a soft pen in running script, it cannot be origami. The lines must be arranged by the author himself, so that they are smooth but not loose, dignified but not rigid. It is best to use running script when signing, and leave large gaps. It is best to give people a natural feeling. Hard pens depend on the kind of paper the author chooses. Different papers have different writing styles, which are generally the same as soft pens. I'm also a calligrapher, please try my best. . .