Way more organic-looking than even modern RM RTPs. I like the shores and cliffs especially. Its nice how the darker grass area on a floor below gives a good elevation effect (seen on the preview). Way you made the bottom of the cliffs could very well work for floating islands, which is a plus. Lovely bridge.
Did you come across troubles making the water/shores part? I ask as it might seem EASY to outsiders, but theres a level of ####### in doing so which isnt obvious when editing your own. Like, its inverted near corners in a way that doesnt make sense and is confusing. Furthermore: You risk having artefacts/odd bits in corners once seen during playtests. Its not a matter of "Oh, theres an odd bit there, lets delete it." Do you know what I mean? Did you initially come upon similar issues? I ask as I made my own world-map shores a year ago.