Calling the Quarters (elements) is done after casting your circle.
As you call the element raise your arms in the blessing position. The elements are usually called starting in the East, place of Air and new beginnings. You then turn deosil (clockwise) to the South to call Fire, then to the West to call Water and to the North to call Earth.
The traditional Wiccan way of calling the elements is as follows:
Ye Lords of the Watchtowers of the East, ye Lords of Air; I do summon call and stir you up, to witness our rites and to guard the Circle.
Ye Lords of the Watchtowers of the South, ye Lords of Fire; I do summon call and stir you up, to witness our rites and to guard the Circle.
Ye Lords of the Watchtowers of the West, ye Lords of Water; I do summon call and stir you up, to witness our rites and to guard the Circle.
Ye Lords of the Watchtowers of the North, ye Lords of Earth; I do summon call and stir you up, to witness our rites and to guard the Circle.
After you have finished your ritual it is time to say farewell to the elements, starting in the North with Earth and moving widdershins (anticlockwise) to Air in the East. This is done before opening the circle; the closing of a rite is done in reverse order from the opening.
Ye Lords of the Watchtowers of the North, ye Lords of Earth; I thank you for attending my rite; and ere you depart to your fair and lovely realms, I bid thee Hail and Farewell.
Ye Lords of the Watchtowers of the West, ye Lords of Water; I thank you for attending my rite; and ere you depart to your fair and lovely realms, I bid thee Hail and Farewell.
Ye Lords of the Watchtowers of the South, ye Lords of Fire; I thank you for attending my rite; and ere you depart to your fair and lovely realms, I bid thee Hail and Farewell.
Ye Lords of the Watchtowers of the East, ye Lords of Air; I thank you for attending my rite; and ere you depart to your fair and lovely realms, I bid thee Hail and Farewell.