To create these waves on my daughter and myself, I did about 8-10 braids in damp, combed, towel-dried hair before bed. Sometimes, especially on thin areas, such as the sides of my daughter's head (see photo above showing braids), I find it easier to start out with three braids near the scalp, and then join those three braids into one super braid, as the hair thins out as you work your way down the braid.
Disclaimer: My daughter and I both have naturally wavy hair. If you have naturally very curly or very straight hair, your results may very. If you try this, or have a question, please leave me a note in the comments! I love to hear from readers.