Of course adapt as needed if this is not general enough for your particulair pagan religuois sect. Sacred Circle is NOT for the beginner. This is an outdoor Sacred Site you will be building. Additionally a perment Sacred Circle will energize beyond any temporary circle cast. The user should be use to communicating with the spirit world already for a perment circle is like casting a circle every day with the power building over time.
Many people practice often enough that they have a reason to make a perment Sacred Circle.
It is wonderful if you have space enough to make a circle to offer it's use to others, preferably those that help you build the circle. This is easy to do and can be done to fit your particulair pagan practices. There are common elements such as the four directions and the center of power within a circle. A circle is a place of power and to some a place of protection. Although most pagans do not beleive in 'evil' protection is seen as a place of grounding so that during spirit work you always have a safe home base.