I made this  Rusalka Headdress and here is the instructable!

The Leaf Faerie Headdress is inspired by the Russian Rusalka Myth. Rusalka came out of the water in the spring to transfer life-giving moisture to the fields and thus helped nurture the crop. However, Rusalka had a dark side, and if you came to close to the river, they might drown you. The headdress transforms from a whimsical and magical garland to an eerie glowing headdress in the dark. Much like the light and dark of the Rusalka.