So, after spending most of the day learning how to add both smoke and flames in blender, I can tell you that unless you intend to produce an animated product, the process isn't worth the effort. At least not with my limited knowledge. Granted, it can produce some astounding fluid effects but it takes some effort to squeeze them out. And you can't truly appreciate them unless they are animated.

Update: Okay so here's what it looks like so far, reworked the background, added some vegetation symbols. Compare the difference between the gate and the walls and you will see that I have to add some moss to the gate to match the walls. meed to rework the moat too, it is too low res.

@Loopysue can't be the graphic card, I don't have one installed, just using the native built in on the motherboard! I'm using a 3 year old stock HP Envy LOL. It seems to be a specific asset. The only engine it would sporadically render in was Workbench set at no more than ten passes. Plus I only have 8 GB of ram on board this clunker as well. In the mean time here's what I have been able to add over the last couple of days. Trying to add more vegetation, with some seasonal variants.

Been working on refining terrain features to make them look more realistic. This is my take on a dirt mound. Going to rework the back fill using the same appearance/texture.

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".