Could there be a built-in way to make ledges? So that we can let our heroes get the high ground.
They work best when there's neither drop shadow nor glow, and when they're added behind other elements in the map. I might make more ledge tilesets later. In practice, drop a few of them and start duplicating them with CTRL+ALT so that you don't have to remove the drop shadow and move to the background every time. Start with corners, if any, to "get them on the grid".
LedgeX: normal ledge tile | LedgeX3: 3 consecutive normal ledge tiles | LedgeXCU: corner up | LedgeXCD: corner down | LedgeXER: end right | LedgeXEL: end left.
Simplest ledge type I could think of.
A tiny bit more complicated. The "cave wall" equivalent, for more rugged and natural terrain.
Now with cracks!