What I usually do when I am casting a circle is i use a wand/athame/sword and point first to the north then east then south then west. i call of their elements down from their respected directions then call spirit from within myself.
I cast circles a little bit differently to most.
I use my ritual staff to channel my energy while tracing my circle three times clockwise starting at North. Then to close the circle I recall the energy while tracing anti clockwise three times.