First, wrap your yarn around and around the cardboard scrap. The card should be the length you want your doll to be. Once you’re happy with the thickness of it slide it off the card.
Snip one end so you have a long bunch of yarn pieces all the same length.
To make the head, twist the bunch once in the middle and fold in half, then tie tightly with a separate piece of yarn of the same colour.
Once you have done that you need to divide the bunch into three parts, the two outside parts become the arms and a thicker bunch on the inside for the waist and legs. Tie two more strands of string around the middle for the waist.
Braid and trim the arms, and if you want your doll to have legs simply give it a tidy-up trim or leave as it is for a skirt.