You're welcome :)

It sounds like you are using a style which has separate coastlines. Look at your sheets in the sheets and effects dialog. If you have a sheet called LAND and a sheet called COASTLINE then to adjust only the coastline thickness pick the COASTLINE sheet and hide all the others. Then you can pick the coastlines and adjust their width and reshow the rest of the sheets.

A general note that might help in the future - if a polygon has any kind of line width greater than zero the fill will vanish and leave just the outline.

Ok, so they're all just stones, and we are looking down on them, but how do they look?

I also adjusted the heather, since it was looking like colour patches rather than actual plants. The upshot of that is that they don't look like quite such a homogenous mass as is natural on a moorland, but I guess I prefer them this way to the way they were.

A bit like this (though these are very raw at the moment and need some roughing up)

Part 1 will be published soon with all the trees and forest stuff, including the ruin parts.

I'm now working on part 2. So far I've done cliffs and heather. Standing stones are next, and then waterfalls and bridge sections. Bit of a strange bald spot in this map. I haven't decided what to put there just yet.