There are quite a few symbols already in DD3 and its add-ons that will work equally well underwater, or which can be repurposed to resemble something of that sort with a bit of imagination. Stone doors will work just as well undersea as on land, for example, while things like fungi groups will work nicely for any colourful creatures underwater - like small sea-anemones, for instance, especially if you make use of the varicolor options. But I'm sure Sue has this well-covered already!

When I needed to add rings for a couple of the planets on the Nibirum Solar System Chart for the Community Atlas, I just used angled lines of a suitable thickness to be seen still, and the line-length correct to-scale for their sizes compared to the planetary discs. As the Cos3 planet symbols with belts in the atmosphere are seen side-on, this seemed a suitable compromise.

It would be possible to go for a more artistic endeavour, showing the rings partly open, but this will occupy more space on the drawing, and I had enough problems just fitting the lines on my effort! It will also make a mess of showing the planetary moons as you have them now, of course.

Do you still have the MERGE Layer (not Sheet) in your map, not hidden or frozen? Effects won't work without it being on and active, as far as I recall.

Otherwise, hopefully someone more technically savvy will charge to your rescue!

Unfortunately Julian, I think you're right. To my eye, ALL these shadowed areas look like they're floating. In addition, the cliff-lines that aren't shadowed, especially those by the lower and right-hand edges look like they're multiple images superimposed on one another, as if out of focus, and that's very distracting too.

For the shadows, I'd suggest reducing their intensity, so they're not as dark, and simplifying them so there's only one shadow per cliff-group. It may be worth changing their length too, though that would need experimentation to be sure.

It might help to add a small, dark Outer Glow at the base of ALL the cliffs, with a smaller Outer Glow at the edge of the stacked cliff-lines that are on top of one another. Sometimes this helps trick the eye into fastening objects down onto the surface more. Again though, this would need some trial and error to see if it helps. Sometimes just a tiny change can make all the difference - it's finding what that is that takes the time though.

With my usual delay, I've just caught up with this week's video now.

Didn't really know what to expect from the title, but it proved quite fascinating, and thought-provoking. Having spent a lifetime making and painting models, I'm inclined to agree with Remy's "stress-inducing" comments in the YouTube chat, as getting models to looks right needs a lot of concentrated effort, especially when you're doing something new for the first time!

However, what occurred to me while watching this is that you don't actually need to make your own models. There are many, often small, companies that specialise in manufacturing scale models of all kinds, including scenery for model railways, wargames and RPGs, some of whom prepare pre-painted and finished items. So picking up some of those would be another option for those who don't trust their own modelling skills, or who haven't the time or interest to follow the DIY route. Image those, and away you go. And yes, there are even companies that make finished model mountains!

I mentioned recently when presenting my in-progress mapping for Wyvern Citadel elsewhere on the Forum that the basis for that castle was a full 3D model castle constructed from modular pieces produced by Dwarven Forge. Now Dwarven Forge also produces modular model dungeons and caves, all finished, painted and ready to use out of the box. And yes, they're not cheap, just like that castle (if not quite so fearsomely-priced overall)! Other companies do some stuff like this, often unpainted, so there are alternatives, and DF do sell unpainted versions as well. However, the DF items cover probably the widest range of possible options in a consistent format. What struck me watching Ralf's video was that with enough pieces like these, it would be possible to generate your own Perspectives-style set of dungeon or cave symbols, by imaging your own models. So this idea needn't be restricted to just overland mapping.