Here's a little post showing me sculpting a landscape in the Neverwinter Nights 2 toolset for my upcoming module, just for anyone curious about the process.
Here's how it started. I took the flat plane, filled it with a sand texture (for the ocean floor), and sank most of it so that it left only a little island in the middle, and a mainland on one side. I put a tower and an NPC on it for scale reference. Then I added a water plane, laid down a little blue tint for later, and started smoothing the island. I caught some of this on video, due to an unintentional Fraps activation, so here it is:
I continued adjusting the height and basic shape of the island until it was approximately roughed out to the right size and shape. Next, I started going over it again with a smaller brush for finer control.
Here, I started picking textures for the island and laying them on. Once I had the basic areas sketched on, I used the texture swapper to try different combinations of rock, dirt, and grass, until I found a combination that looked pretty good together.
After that, I added rocks, grass, trees, and bushes, as well as a dock and some rowboats. I adjusted the water and atmospherics too. Here's a brief video showing the island at this stage:
Then I threw on some textures for the mainland. Since this is off in the distance and shrouded in fog, it's not important to have fine detail, so I used camouflage-style large blobs of colour.
And here's a screenshot of the mainland from the lighthouse island.