In that image, a little bit of the backside of the cap is visible. The dark border at the right bottom.

So as I understand it, the AI would have to figure that out on its own and remove it before it adds the boy to the image?

Also, that image has watermarks all over it. Does that mean the AI has to detect and remove those?

The perspective of the cap is rather unusual for a photo on a human. As it would cover the eyes. Does that mean the eyes of the boy would be covered in the result? Or do you expect the AI to change the perspective of the product photo?