Tutorial on how to make diamonds by cutting paper. The final work is uneven and looks like a processed diamond! The first and most critical step is to draw the texture on the cardboard and cut out an octagonal shape as shown in Figure 1; then fold it according to the texture of each corner, and finally glue it together. For specific DIY methods, please refer to the illustrated tutorial below. If you still don’t understand, just try to figure it out yourself.