@livi_is_evil as promised here is one idea for a forest fairy costume idea. Now truthfully this was the hardest story for a costume I've ever done!!! It was not difficult because I couldn't find the materials for it but because I found so many. If you want to be a fairy all you really have to do is wear a dress with a sort've (poofy???) bottom or a tank with a tutu & add wings. Everyone will know what you are just by the wings!!!