DIY foam board to build castles. Needc help for drawings.

Hi. Long time ago, I used to make rooms for playing games (like space hulk :) ) using foam board. Foam board is just styrofoam with paper glued on it. So, if we hade a PDF file that we could print and glue on styrofoam, we would have easy something that is very cheap, and we'd just to cut and put a little bit of adhesive tape to make nice looking things. This could include : -Castles (every body like castles) -Making a small version of your own home -Making some real-life map of doom (code is open now, I hope textures are too). Is someone interesting in making some plans with me, and helping for the texture, so we could make an instructable ? Regards, tReg.