Well, here's how this works. The darker section is a shadow. It shows where you're supposed to use a darker color. The more difference there is, the more ominous the shadow looks. But if you go too dark, it loses the effect.
Since it's not just a blanked out screenshot anymore, you do have to credit me.
Also a WIP, like I've been doing to show my newest process of rendering, which actually helps a lot.