What are the simple ways to cut window grilles?

First, prepare a square piece of white paper, fold it in half, then fold it in half, then fold it into three equal parts, cut off the excess parts with scissors, and draw a pattern on the folded corner with a pencil. (subtle pattern changes will eventually show different effects, which is also the charm of paper-cutting, with unlimited imagination. ) Cut the pattern carefully with scissors. Be careful not to cut down the details. Gently spread out, the window grilles are magically displayed in front of your eyes.