Your doll will be about the same size of the hardback book you use so find a book the size you would like you doll. Wrap the yarn fairly tightly around the book between 30 and 40 times.
Tale a long length of string and slide it under the group of strings around the book.
Slide the string up to the top of the book and tie it tight.
Slide the yarn off of the book.
Gather one side of the loops in your hand and cinch it a couple inches from the top. This will be the head of your doll.
Take a small piece of string and tie it where your hand is tight.
Cut the loops at the opposite end of the yarn doll head.
Take a small section of yarn from each side of the yarn doll. These will be the doll's arms.
For the arms, you can either tie them at the elbow and the wrist of each arm or you can braid each arm and then tie them off with a small piece of string.
Tie the doll with a piece of string at the waist. If you want to change the doll from having a skirt to having pant, split the strings below the waist string into half. Tie each of the halves, halfway at the knees and then each at the ankles too.
My girls still have Frozen Fever around here, so we made a set of fun Frozen yarn dolls for them to enjoy. You can find the instructions for each individual doll below.