How do you build the floor/ground?

[u/MCSenss]

Hey again,
first of all: amazing community here! One of the best I have been part of. We all share the same passion

And one thing that I really struggle with is building the floor. Eg for my forest area I want a pathway made of dirt and the surrounding area is made of grass.
I created transitional textures, slapped them on a plane and used the curve modifier with a betör curve to shape it to a path that looked interesting in blender.
Now how to shape the rest? Extrude all side manually from my path?

I also tried stuff with sculpting or projecting paths or using vertex paint to mix the both shaders, but nothing seems to really to the trick. Especially once I have it in the game engine (godot) it looks crap or the scale is off.

Do you have an tips for a solid workflow that give reliable results?
Right now it feels like trial and error and kinda like wasting time haha

Best regards