This is how to make the bonnet for the project:
Download the pattern from Christina's website. Print the pieces and cut out - you will have 3 pieces, the brim, the crown and the back insert. If you fold the edges to the centre of your fabric you can cut 2 bonnets from approx. 60cm of fabric. I have used plain, unbleached calico.
Join the two pieces of the brim with a 1cm seam, taking care that you are joining the 3 un-notched edges. Clip corners, turn and press.
Lightly gather the front and back edge of the crown.
Pin the centre back insert matching the single notch in the centre of the gathered back edge. (The brim edge has 2 notches). Stitch into place.
Turn and fold over a small hem along the neck edge.