This is relatively small but mighty! I have played with the see through qualities of windowpane sinamay, layering firstly blue on natural sinamay then structuring a double bias  brim of blue inside a disc of natural coloured windowpane  sinamay.
I have trimmed it with a starburst of biot feathers then lined it with complimentary Liberty print tana lawn.
It is attached with an elastic that is worn along the back of the hairline. I find this is the most comfortable way to wear a smaller scale hat (trust me I have experimented).