The northern sector of my world

[Kyrel]

Looks pretty good! The labels seem a bit large to me, but that's a small quibble. So I'm curious as to what method you ended up using to get your desert, temperate and arctic biomes. Did you use the Wilbur latitude shader, or did you come up with your own gradient maps, or use some other method?

I ended up making three shaders in Wilbur; desert, icy, temperate. I rendered the texture for each climate, pulled them into PS, set the temperate one as the base layer and applied layer masks to the other two, and with a large low-opacity soft brush I gradually revealed bits of the desert and ice layers wherever I wanted them