Some women enter a room and the room stays the same. Some women enter and the conversation retunes. That is not magic and it is not meanness. It is a stack: a body that is not leaking, a claim that is not fog, a standard that does not bargain in the doorway. Electric Empress builds the stack. She does not wait to be in the mood.
You cannot fake this with a louder laugh. You can ruin it with a smaller rate, a quicker yes, an explanation nobody asked for. Rooms read leaks. If you are still trying to be chosen by people you would not hire, the room will treat you as available, not inevitable.
Changing a room is a responsibility. It is not a license to dominate. You do not need everyone smaller. You need the table honest: names, work, money, next move. If your presence requires other women to dim, you are still in costume. If your presence lets the work get sharper, you are in office.
Practice in ordinary rooms. The grocer, the call, the dinner you did not plan to 'network.' If you only turn it on for the fantasy table, it will stall when the real one happens. Inevitability is a habit, not an event.