I liked the previous ruins so much I continued on its track.
This time I used corrugated cardboard for the walls and after assembled the building, added sand and other basing material. After the zenith light priming paperprints from the DzC terrain was glued on. I hid the edges with more sand and some paint.
Really easy and Im really pleased by the outcome.
And combining these with my previously made smaller ruins I could have a small burned out street.