I take a lot of my fairy knowledge from the Tinker Bell movie, lol.
I would be the kind of fairy that changes the seasons (most notably spring comes to mind), makes the snow melt, makes flowers bloom, mushrooms sprout, watches over newborn baby animals.
You know, make sure everything in nature is in balance.
A fairy that wears dark indigo (my fave color is indigo! ^_^) maybe I could control like ice, and turn into a wolf (my fave animal! ^_^) and yeah I would look like this just maybe not as evil:
I would like to be a animal fairy and a fast flying fairy because my power as a animal fairy is to heal up animals with my hands and as a fast fairy I will turn into tornados and stuff