For my previous layout, I used styrene sheets for the 'sidewalks/city blocks' (see here), which was adequate. However, styrene sheets are somewhat expensive for this role and are a little difficult to cut. This time I am using card stock. I paint it with a 'Dark Aircraft Grey', and then using a pencil add gridlines and then some weathering powder to 'dirty it up' and then finish up with a matte coat of spray paint:
I say all that to point out that my next blog post with any visible updates may take a while! So in the meantime, thanks for reading and check back soon!