It's not a case of you fitting into a category; it's more what you choose to incorporate into your witchcraft practice. So if you work tarot spells and divination (reading), or if you create works of art that include some kind of magical meaning, then you can call yourself an 'art witch' if you'd like to. With regards to art and witchcraft, many art witches write or include symbols as 'under-painting', or even in plain view. It's always personal to you.
Many people think that it's a passive thing, that who they are and what they do determines their path. But it's not like that at all - you always get to choose... and you can choose anew every day if you want, or you can find your 'witch niche' and stay on that path forever. It's an adventure.