I am a Solitary Eclectic Wiccan and I a variation of a circle casting in the book 'Natural Magic' by Marian Green. I was wondering if you could perform a ritual using only a patch of grass, incense for air in the east, a candle in the south for fire, a bowl of water for water in the west, and a stone in the north for earth - though instead of placing these on a alter, simply placed inside a cast circle on the ground. Would this still be expectable? ...