Once the sweaters have been felted, cut up the fabric into squares. I did all of this by hand as I don't have a rotary cutter! A rotary cutter would have made the job much faster!
Felted squares ready to go.
Use a needle to put the squares on embroidery floss.
Tie the embroidery floss together.
The mag recommends using 60 squares.
I got this idea from a holiday craft magazine, Family Fun - Christmas edition.