I'm working on building a Roshar-inspired survival world where it can have all of the overworld biomes on essentially one island shaped like Roshar (with maybe an isle of berk somewhere off the side if I can figure out this heightmap first).

HOWEVER, every time I try and use this the slope into the ocean is super drastic as well as the edges of rivers and lakes. The heights of plains and deserts also isn't consistent.

Does anyone have any tips on how to use cotamap to edit this or make the process faster in worldpainter?

Thanks!