0.6~1
It is wiser to use ADetailer.

If you want the jacket removed, try adding "skin-tight sleeves" to emphasize that style, while specifying "oversized jacket" or "white jacket" in the negative prompt with a weight of around 2 to 3. Doing so can sometimes result in the jacket coming off...

I did create a prototype, but attempting it based on just a single official image was reckless.

I hope you can get a sense of the overall atmosphere.

How exactly do the experts make them? I'm really curious.