WELL, First off, Welcome!
Second, check out this thread here:
http://www.cartographersguild.com/showthread.php?t=1519
and this one:
http://www.cartographersguild.com/showthread.php?t=843
These are all cities done with CC3 only.
To emulate the style, you could drawn simple white polygons, and then outline those polygons in black, then place the BLACK out line on a separate sheet, and change line thickness to get a thicker line.