Casting a circle is one of those conundrums that is simple yet complicated. That said anyone can do it, though you will likely find it becomes easier to do and the circle stronger with practice. I spoke of a circle before as something we Witches use to create sacred space. Really it is a sphere with you in the middle. You would erect one or cast one any time you are going to do a ritual or magic. What you will be doing is using your energy to create a sort of energy field around you. It is space and time that is of this world and reality yet slightly removed. We do this to both shift our consciousness as well as give us a space where all the energy inside is our own. The circle also gives us a measure of protection as you will see. You may or may not be able to feel it the first time you cast one and that is ok. Like everything with practice you will get better and better. The technique below is one I find to be good for beginners and non beginners alike. I use it quite frequently when I am doing work on my own.
A few key points before we get to the how to or recipe if you will
You want to be comfortable
You can do this sitting or standing or laying down
You may want to lay out something like a cord to make the boundary of where your circle will be
You will want to have what ever you are working on set up before you start. Whether your doing a spell or a ritual make sure you have all your components present. (which goes back to why a Book of Shadows is so important)
You will want to have water and food right after you are done in circle to nourish your body and help start to replenish the energy you used to create it. You may want to prepare a plate for you just so it is ready.
Be in a comfortable place and position. Breath in and out to center yourself, and to become fully present and in your body. Focus on your breath and use the energy of your breath to build energy around you. You may picture it as a small white blue light growing with in you with each inhale. As it grows and grows it will encompass your body and then you may picture your exhale blowing this light larger and larger. Focus your energy on this light and making it strong. I often picture mine as a shimmering bubble but strong like a force field. If you are standing you can walk the circle clockwise holding out your hand or wand or other tool pouring your energy into the circle making it strong and true.
You will then invite the God and Goddess to be with you. To keep you safe and bless your work and guide you.
Something as simple as “Gracious Goddess please be here with me now in this circle. Please keep me safe and my actions honorable and in accordance with love and life and you. Gracious God please be with me now in this circle. Please keep me safe and my actions honorable and in accordance with love and life and you”
You will then invite the four elements to be present with you as well.
You may do your work
To close your circle you are going to have to do something with that energy. If you have used a tool such as a wand you can visualize the light being sucked back into that tool, dissolving the circle. If you are not using a tool (and I am very often not) you can visualize the light being sucked back into you, or you can thank the God and Goddess for their attendance, blessings and abundance, ask the take the energy from the circle. You can then visualize the sphere dissolving and dissipating.
Eat and Drink water. I cannot emphasize this enough you will need to ground and replenish yourself.