Flax Hats???

I made a crocheted cowboy hat for one of my grandsons recently which sparked orders from two other of my grandsons :)
This time I've decided to try crocheting them from the leaves of our NZ flax plant growing in the garden.
I use the older dry leaves from around the base of the plant. The fibre needs to be soaked in the bath overnight to soften it enough to be able to use it. Not sure how it will go... We'll see...