Now that my group decided to upgrade to the 4e rules, we'll make new characters and a new campaine. In the new story, they asked for a castle, and gave me a rough plan and some guidelines, and I have to make it into a map...what I need is some great castle walls for it, some ballistae and catapult brushes and some chasm,abyssal textures for now...
and some advice about how to design the main structure of the castle would be really good... it is supposed to have multiple levels, 2 3 even 4, and I'm looking for a way to reflect this fact on the map