Mix equal parts candle-painting medium and black acrylic paint. Clean candle by wiping with rubbing alcohol. Paint patterns on candle. Be loose and have fun. If you aren't happy with your creation, wipe the candle paint off with rubbing alcohol and begin again.
Acrylic paint hardens quickly.
Be sure to cover your painting medium and clean your brush well with water if you'll be away from your work table for more than a few minutes.