Decided to go a little off script and try to make some furnishings using leftover styrofoam, foamcore and other stuff around the house. I had some hits and some misses. Here's what I made:
1. First I cut some shapes using a boxcutter and glued on a foamcore base so it would sit flat. Then I applied the black paint & Mod Podge combo. For pillars, I tore off chunks to simulate ruin. For the doors, I carved in bricks and a door design with a dull pencil. For the rest, I didn't do anything, because the porous quality of the foam looked good already. I stuck screws in the tall pieces to keep them bottom heavy before I stuck on the base.
2. Next, I painted everything grey. I wanted a good amount of paint on these because I knew from Youtube videos that spray propellant 'eats' styrofoam (but the paint protects it).
3. After that, I made a light green wash to simulate moss/gunk and dabbed it on here and there.
4. Next came the highlights/drybrush. I didn't have white - which would have been better, so I used beige and yellow. Not ideal, but OK. I find it hard to 'load' the right amount on the brush at this stage.
5. Almost done now. The 2nd last step is a blackwash. I had to give it 2 coats to get the right look.
6. Last step: Clearcoat spray. I found 1 coat was enough this time.
Verdict: Pretty good. I'm happy with most pieces. I am glad I put the screws in to weight them down, though I do think that they still feel too light. A breeze could knock it all over. If the floor tiles are only 98% flat, they make the whole setup move around on the table... not great. In the end. It all looks good enough, but is it useful?
That's why, if I did it all again (and I might), I would at least do the floor tiles a different way.
I had one of these bathroom tiles left over from a reno. They are nice and heavy. 3"x6" exactly, too! And...perfectly flat.
You could mount the foamcore on top, but I also had some of this...
So I sculpted the grout on the tile with a Q tip with the end cut off. The stuff is not very easy to work with, but eventually I got this result. (You can see I tried it on foamcore too.)