Clothing store.

Before you do anything else, you want to finish your self-improvement project.

You grab your car keys and head out. You're not usually one for clothes shopping, but you have a vision of your ideal self and you know it will need to involve a new wardrobe.

After driving around for a while, you spot a nicer men's clothing store and head inside. It's not very busy at eleven AM on a Tuesday, but that suits you just fine. You're riding the high of your newfound powers and have a surplus of brand new big-dick confidence.

A man in his forties approaches you. "Hello, welcome. Anything I can help you find?"

You scan the store before responding, and spot another employee more to your liking. Cute girl, late twenties, nice chest. "No, but I'm going to need to borrow your friend for a bit. No offense."

He does in fact seem somewhat offended, but you don't care. You could turn him into a frog, probably. He doesn't matter.

You approach the woman and snap your fingers to get her attention. "Girl. Attend me."

She turns towards you with a slightly disgusted expression and opens her mouth to tell you off. She's wearing a name tag that reads Jenny.

Jenny is attracted to assholes, and becomes submissive when treated badly.

A funny look comes over her face for a moment but she recovers, smiling politely. "Yes sir! Of course. What can I do for you?"

You look around a moment just to see how well that simple suggestion took root. You spy a very cute sundress you think might fit Jenny and you point at it. "Yes, you can help me. But first, change into that. Those pants are not flattering on you at all. You look like a lesbian."

She gasps, looks at the dress, then back to you, then down at herself. She looks confused and uncertain.

"Are you stupid as well as ugly?"

"N-no sir! I'll go change right away and be right back!" She snatches the dress off the rack and flees into the changing rooms, reappearing a few moments later looking very pretty in the dress you'd picked out. She returns to you and spins. "Is this better, sir?"

You nod. "Yes, very sexy."

She brightens, pleased at your validation. "What can I do for you today, sir?"

You take her into a changing room and send her out for things you want. Nice slacks, nice shirts, new underwear, etc. Confident that you'll have access to anything you can need, you use the dressing room mirror to alter your physique.

I am six feet, three inches tall, with a lean athletic build. I have all the physical benefits of regular physical exercise, excellent muscle tone, and high muscular and cardiovascular endurance. I have very little body fat and always smell clean and masculine. I produce pheromones that make everyone around me perceive me as dominant. These pheromones are not hereditary.

You tweak yourself here and there. Broader shoulders, larger muscles, longer legs, etc. Your new friend Jenny runs back and forth to bring you things to try on until you decide on your final, appropriate size. You make her stay in the dressing room while you change, and you catch her staring at your crotch multiple times throughout the process. She's clearly very into you. And you notice the longer she stays in the room, the more polite and servile she becomes.

After maybe two hours in the store, you assemble a nice wardrobe for yourself. Jenny seems not to want to see you leave. Of course she wants you, you are a king and she is born to serve. You could have her easily, but are you really interested in a servant?