Make sure that the place is private and free for as long as you’ll need the ceremony. Being interrupted in the middle of a ritual is a frustrating and even dangerous experience.
You could also try using a cleansing agent like witch hazel, sage, patchouli, or lavender to cleanse the area - a couple of drops in each corner of the room and round the perimeter of the circle should be sufficient.
Alternatively, if you’re in the outdoors, consider using the elements of nature to create your circle. Create a circle of rocks or other natural elements if it seems appropriate to your ritual or practice.
If you’re going to offer something to a spirit, remember to include that and everything you’ll need to prepare it. Other popular items to include in rituals include totems, black candles, crystals, knives, bells, bowls of salt and bowls of water. Organize them, whatever they are, to form an altar. Bring a surface to set them on, like a box or crate with a small black tablecloth. The altar should face north, as should you when you’re in the circle completing your ritual.
Salt, a stone, or a green candle could represent Earth. Incense, broken glass, or a yellow candle could stand in for Air. Water in any receptacle is a fine representation of water, or a blue candle for Water. A red candle or cigarette does nicely for Fire. If you have one, you could also use the Aces in your Tarot deck.
Walk around the circle, lighting the candles, leaving a trail of salt around the boundary. In each cardinal direction, recite an invocation like: “Blessing upon the creatures and spirits of the North”[4] X Research source
“I conjure thee, O Circle of Power, that thou best a meeting place of love and joy and truth; a shield against all wickedness and evil; a boundary between men and the realms of the Mighty Ones; a rampart and protection that shall preserve and contain the power that we shall raise within thee. “[6] X Research source
Meditate for a while now. Meditation or astral projection might be the main act, or it serves just to shift your consciousness.