They are made without any metal, or plastic, or anything sharp or abrasive so as not to injure either the child receiving them, or the person carrying them. Thus, the basic pattern is a series of coils. Trial and error formulated the original dolls, and trial and error will enable you to quickly arrive at your own method of assembly. I will write down below the general method I use, attempting to explain it the best way I can. I like to use variegated synthetic wool to prevent shrinking, using alternate colors for Arms and Legs.
All measurements are approximate.
Chain 50 - 60. It will curl as you go, so straighten and flatten curls, and coil to form body. Curls should be about 1.5 -2 inches across. When coiled you should have 10 - 12 rings. Align Ch.'s, sew up and down to secure and compress body, not too tightly, and secure wool at the top.