I want to do a female version of Dr. Facilier too!
I was thinking about how to go about it as well. Sure one option is to take his basic costume and just tailor it to a woman's figure. But, I personally was also thinking of doing something that would maybe incorporate a skirt, possibly tights or leggings, and boots. I don't know, I see a lot of room for creativity, but if you want people to see you and immediately know who you are, you should stay true to original design.
Ezio Auditore da Firenze (AC II)
Moka Akashiya (Rosario + Vampire)
Homura Akemi (Madoka Magica)
Next Con: SacAnime Winter 2015, Fanime 2015
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I like nonsense, it wakes up the brain cells. Fantasy is a necessary ingredient in living, it's a way of looking at life through the wrong end of a telescope. Which is what I do, and that enables you to laugh at life's realities.