Test it on a friend.

For your first real demonstration of power, you arrive at a friend's house. Her name is Lily. She answers the door and invites you inside.

"Can I get you anything to drink?" she asks.

"No thanks. I just came to ask you something." you say.

"Sure, what will that be?"

"Can you take your top off for a bit?" you ask her. You see a flicker in her eye before she begins removing her shirt. Underneath you see a pair of soft beasts in a standard-looking white bra.

"Anything else?" she asks.

"Your bra, too, if you don't mind," you say politely. She reaches behind her back and unhooks her bra, slipping it off and letting it fall to the ground. Her perky boobs are bigger than they looked clothed. Now that you're sure the verbal commands work you decide to test your powers using nothing but your thoughts.

Step forward, you think. She steps forward. Hold still, you think, as you reach out and grope her breasts. She doesn't move. This is perfect. You can feel the book and your cock both urging you to take it farther, to use her and fuck her in a thousand different ways.