Shaders often work only in specific versions of Blender, Maya, or Unity.

Look for "Toon Girl" rigs on sites like Gumroad or Sketchfab to study how professionals build their topology and shaders.

Toon shading (or cel shading) is a rendering technique that makes 3D objects appear flat by using a stepped gradient for shadows rather than a smooth one. Why Modeling Matters for Shading