Now in the atlas:

If you have the crop image to aspect ratio option on when exporting, you shouldn't get those white bars on the top/bottom.

It gets a bit more interesting when using the dungeon walls, since a regular floor mask would cover up all the unevenness of the stonework. But I am wondering if you could use TRACED to generate a polygon made up from the total area of both the floors and walls here, perhaps with a distance of -0.5 or something like that to make the mask "hole" for the dungeon to give that below ground feeling. Probably need to do something with the path to the entrance too though, to make it look like it is sloping downward towards the entrance.

There is a bug with a few of the Cos3 templates. You can grab an updated version of the installer from your reg page, or download the fixed templates only from here. That should hopefully fix things for you (note that fixed templates means it will work properly on new maps crated from these. For existing maps, I recommend just copying things over to a new map once you have confirmed this fix works for you)

Your map is 250 by 200 feet, so that is 50 by 40 squares. Each square in FG is 50 pixels by default, so should be 2500 by 2000 pixel export if my calculations are right

So, with visitor restrictions being relaxed a bit, it's was possible to bring the gang together once more for some roleplay. This weekend, the game took them to a sunken temple in a deep mountain lake, and what better to use for mapping the underwater scene than Sue's newest annual?

I am not completely happy with everything on this map, but it turned out quite ok thanks to Sue's excellent artwork.

I could have improved some details if I had more time, but it had to be ready for the game Friday evening, along with the map of the basement below (not shown here at this time, maybe I'll show it when my players are done with it), so time was short. It was quite good enough for the game anyways.

I could probably go in an improve it now, but since it has already been shown in the game to the players, it is kind of locked down in my eyes, so I am probably not going to modify it. But If I were to change it, I would have tried to make it look a little less bare in several areas.

Filling out outdoors areas was never my strong suit anyway though.

One major flaw with it is that it doesn't really look like the environment at a freshwater mountain lake. You don't have corals or seaweed, the vegetation is quite a bit different. But, all these things do help set the underwater mood, so I did decide that even if it wasn't completely realistic to the environment, it still served to enhance the map and reinforce the image of this being an underwater location, and I think doing it this way actually made for a better map for playing purposes.

All in all though, while it does have some flaws and some obvious mistakes, I am reasonably happy with how it turned out overall.

(Hi Res)