This is a live mapping session by Ralf that demonstrates what can be done using Cosmographer. I've given you a link to the right place in the video for how to draw a starship (which I think was of more than one level), but if you've never used Cosmographer before you might want to start at the beginning.

I hope that helps :)

I've managed to get a few mesas, canyons and buttes together.

I decided that the compass was too big for the standard 100 mile scalebar (the one above really is 500 miles at default scale), so I made another 2 to go with the smaller scale bars - removing a level of detail for each one. I hope you still like them.

Here's a quick scale bar and compass.

I think I have most things covered, though not specifically mangrove. There is a swamp fill, and a tropical forest fill, so you could make a mangrove using a patchwork of those two. However, unless your mangrove is the size of a county it won't really register as more than a dot on a world map.