Ah, back to the tutorial!
The only materials needed are flowers, as the flowers I used have long wire stems. If you are using flowers without stems (pound shops are good for finding cheap plastic flowers), find some low gauge wire which you could cover in green ribbon once the headband is done or paint green if that suits you better. Alternately, the flowers could be attached to an existing headband, if you wish to take the easiest route.
Measure the circumference of your head at the point at which you would like the headband to sit, allow a little room, the flowers are light and the headband should generally cling to your hair rather than needing to fit too snugly. Lay out this measurement on a flat surface and arrange the flowers so that they are equally spaced along it.
Twist the wires of the flowers together to join them. Make sure to tuck in the ends tightly so that they do not snag on your hair as you put the headband on and off.
Feel free to add some twirls and swirls or leave or flourishes of any other kind, to make your headband even more unique.
Voilà, it is done!
Now go dance and prance, like the faeries that come out at night and scatter their magic among the roots of the ancient trees of the forest.
The dress in these photos is from Topshop