I made double-sided sun hat for my daughter. Pattern from the below book - making children's clothes written by Emma Hardy. Bought the book from Kinokuniya KLCC a few months back.
I find the pattern and sewing instructions to be easy to follow. The pattern pieces are printed double sided, as such, will need to first trace the pattern pieces needed before cutting the fabrics.
Made the outer part using a black flowery fabric, and the inner part using a pink fabric. I personally love the end result. I also enjoy seeing her wearing the sun hat.