Time of Day
As you can probably see, all the objects and interesting terrain in the world can't make this map look any happier. Why not? It's because we need lighting - out lighting at the moment is dull and boring. So let's add some lighting! See before the Time of Day adjustments:

Now we need to adjust the time of day. So pop open Terrain > Time of Day and then in the sidebar there, click on
Import from File. Then navigate to your editor directory (Most likely C:\Program Files\Electronic Arts\Crytek\Crysis SP Demo\Editor) and load
default_time_of_day.tod.

After that is done, exit out of the Time of Day dialog, and move around your map to see the changes. Our forest looks much better now, doesn't it?