This is a quick look just using a bitmap fill for the background. I doesn't look terrible and the tile seams aren't glaringly obvious so it's passable I suppose. I didn't apply any lighting effects and the symbols aren't defined in a catalog, just a straight import. I used the dd3 battle tile setup for a 100' square tile. It would definitely benefit from carefully applied sheet effects and additional terrain features to remove the "flatness".

Okay so I am not a fan of backgrounds with alleged "seamless" repeating textures. I have yet to actually find one that doesn't look unnatural. SO I'm trying to make some backgrounds for this project as a potential style and I am running head first into wall. I want a true orthographic background that is the proper scale, in a single image that isn't a tiling pattern. I'm using Blender to create the background and I have what I think is a pretty good look but I am having a devil of a time getting it out of Blender so that when I import it into Perspectives it is "in scale." So I'm going to have to research how to get this done.

First pass at a dry moat. Obviously needs the various rotations and a background that it will look good on.

Latest Update: Small long house, color variation using an aged wood. I think I'm going to start working on some terrain features for both the background and mapping symbol variations. I'm going to try for a spiked dry moat first. The real trick will be getting everything to blend seamlessly with the background image(s) and the other mapping symbols (vegetation, paths, equipment, tools, etc., and other signs of habitation). And, as I'm looking at it, this house needs a floor!

Update: Small block house suitable for a gate house, guard shack, etc.