Hi, glad you like it!
To get the shader to make a map instead there are at least a few steps.
- disable the spherify
- set the final color alpha to always be 1.0 . That way you won't see only a disk.
- multiply the uv with a vec2(2.0, 1.0). Then also extend the rect to which the planet is drawn to be twice as wide. That way you will see the front and back of the planet at once.
After that you might still have to mess around with lighting and dithering to get a good looking map.
Hope that helps!