Do your research. Please do not borrow from other cultural symbols or practices without understanding what they mean and why it's done that way. Especially when it comes to Voodun (aka Voodoo) or Native American based systems of lore and magic. So many people just throw whatever cool thing they find, without any (or worse - the bare minimum) understanding of what it means. For people of those cultures it gets really really old to see their religion or mythology pooped on all the time.
Also: If you're doing anything with witches.
1. Most covens do not get naked. The people who do are kinda looked at like most Christians see Westboro Baptists.
2. Most covens are not female exclusive.
3. A witch refers to both male or female practitioners.
4. Witches come in every shape, size, sex, race, orientation and background.
5. Witches do not only worship a single god or goddess. They are polythiestic cultures, and focus largely on self knowledge, healing, earth/herbal magic.
6. Much like Catholics, Methodists, Baptists, etc all hang out under the same umberella of Christianity, Paganism has the same deal. Do your research into the different sects and traditions of paganism and witchcraft