I am not a blank, white-wall person. If there's a spot and I have a picture, that's where it goes. The placement of pictures is often determined by working around the furniture. I'm not about to sacrifice hanging a favorite picture because it has to be out of balance with the one next to it. If there's a spot, that's where the picture will go.
I had the long black dress, but found this wonderful asymmetrically-cut blue overtop. On the back I used glue and glitter to make a pentacle and a gold craft pen to surround it with the signs of the zodiac. I had found this large and wide length of black scarf with sparkles in multiple colors and another scarf with symbols of the goddess; black on one side, gold on the other. To top it off, I found a wonderful lucite walking stick with a clear orb top. I used to have multiple charms that dangled from it, but those are gone.
With straight, waist-length hair, a fantasy necklace around my forehead and dark eye makeup, a table with a bright shawl, my crystal ball, iChing, a candle and my Tarot cards. It was all quite effective.