The most important way to prepare for a session is to intend to have clear and direct communication with that part of you that is able to provide healing and information. Let’s call that part of you, your Higher Self, your True Self.
You can repeat your intention silently or out loud throughout your day: “I have clear and direct communication with my Higher Self”.
Strengthen your intention for the session, but at the same time release yourself from any specific expectations regarding what and how your experience will be.
Another way to prepare, is to listen to a guided meditation to connect with your True Self. I have created this guided meditation, allowing you to connect with my voice.