My first try was not successful. This is what happens when you do not think and just follow what the tutorial says 
I was trying to make polystyrene stairs look like ruins; aged stones. I ended up having nice & dark castle blocks. If you want to make a castle, you can try the following painting process:
I first gave the whole a black undercoat (acrylic paint). Carefully done this to not to leave any white spot. After undercoat was dry; I drybrushed the model with dark grey; not covering the black details.
After each color is dry, I drybrushed several times from darker grays to lighter grays hoping that I could get a better lighter look… But nope… I even added a gray blue at the end. Nothing helped… I decided to leave this alone for the day continue the other day starting all over from the beginning to the painting. http://www.thelastalliance.com/index.php?pid=article&articlefilename=terrainweathertop&catid=12&subid=92&artilceid=14 Here is the tutorial if you like to check out.
{ 2 comments… read them below or add one }
Nice work! I’ll have to do a cross post on this one
Thank you!