Darning stitches are made by crisscrossing threads vertically and horizontally to create a surface, as if weaving fabric. Originally a technique used for repairs, by combining multiple techniques you can create cute designs. Large areas can be covered in a short amount of time, so it's perfect for bold designs such as cushions. The yarn used is mainly wool yarn. Leftover yarn from knitting is very useful. By mixing different yarns or using yarn with gradations, the process of creating complex colours is so much fun, you'll find yourself losing track of time as you enjoy it.