The Right Mindset and the Right Command

The right mind the right mindset as she says is the intent to know what you're doing and why you're doing it. On Nalthus we see as well the Vavena learns that it is helpful if she can form a picture in her mind of what she wants the object to do. That's her intent which like you said we also see with Navani It's very clearly explained here in this quote. The command is a separate thing it's not totally clear how it's working in this instance yeah but it's sort of translating your sort of liminal idea into specific words would be the command.