The columns on either side of the arch opening, and to the right and left of the moulding, are in three sections: the brick work, the fluted pilaster, and the carved flower petal section at the top are separated by two sections of moulding, with a moulded plinth at the base of the brickwork. I draw double lines so I can keep the carving straight and even. Your eye will pick up any wavering in a vertical line. I use a 7/16" V- parting chisel to carve this. Remember - can't shave with it, can't cut with it. Its very simple carving but has a pleasing visual appeal. >