Help with elevation changes on battle maps (DD3)

[tordek1265]

Hello, everyone. I am new to digital cartography since one of my good friends moved away and we've taken up the virtual tabletop. I am using Campaign Cartographer 3 along with Dungeon Designer 3.

I am making a battle map of a building on a city street. I'd like there to be a staircase coming down off the street to the door, like you sometimes see in cities. Here is an example:

stairs entrance referance.jpg

This map is made by someone else, but I'd like to emulate what they've done. My question is, how do I make walls that look like they are sunken into the ground?

I'd also love any advice on making stairs and steps. DD3 came with a few stair objects, but they are all 5' by 10' and I'm looking more for just a few steps (probably 5' by 5' or even 5' by 2.5'). If you know any good places to grab some stairs, or know how to make them, I'd love to hear about that as well.

Thanks.