Don’t be distracted by the perspective distortion and parallax of the camera shot. There is no way to get these shelves of Jeans to look straight and level … because they are not. Even though only subtly out of skew you do get the impression something is not quite “right” or “high quality” about the store, even if you can’t spot it directly.

SEARCH “Best Practices” for common sense fixturing advice, or “Failed” for failures more dramatic than this.