I came up with a new way how to quickly sew a "diagonal checkerboard" from strips of fabric DIY

In patchwork, the simplest and lightest pattern is obtained from squares. And how to sew it quickly? And to get an interesting pattern? In this master class, we learn how to sew such a block using strips of fabric. The resulting patterned border can become a decoration for another large product, or it can become the basis for an independent project. We sew a sofa decorative pillow.