3 Plant bread crumbs
The team wants more specific elements, so I start doing a number of black and white sketches. I usually work with small cutaways, or vignettes to create focus. Also note that more rounded shapes tend to be more welcoming to the viewer, while sharper, pointed shapes create a sense of danger. If I create enough story elements to show that the location is ‘lived in’, it’ll make the player want to explore the rest of the world, and give the writing team plenty of breadcrumbs to write into the lore.