Felting is a favourite art form of mine. To make "painted " pictures in felt, I start by laying out raw wool fibres in layers to form the pattern I want, then apply water and soap and rub gently, after which I apply friction by rolling up the piece repeatedly in a bamboo mat until a thick fabric forms. This is an ancient process, and it always seems somehow miraculous to me that loose fibres of wool can change so dramatically into a thick and durable piece of material. Once the picture is formed, I add a little embroidery for detail.
Occasionally I also make pictures by needle felting. This is a modern technique, invented around the middle of the last century, and is achieved by pushing raw fibres into a piece of flat plain felt with a needle.