Several years ago I guest posted this tutorial over at the Britex Fabric blog with a pattern and instructions for a child’s cadet style cap! Check out the amazing fabrics they carry! The hat below is made from a beautiful herringbone olive and espresso wool from Britex (these exact fabrics are no longer available).
The instructions and pattern link are available here at Britex. This free pattern comes in child size 5 only. The finished base of the free hat measures 20 7/8″ and fits a head circumference (measured from the middle of the forehead to the widest part of the back of the skull) of 20 1/4″, the average size of a 5 year old.