What is the best way to create a normal map 3D model?

The best way to create a normal map for a 3D model is baking high-poly details onto a low-poly model using tools like Blender (free) or Substance Painter. Baking transfers fine details (e.g., wrinkles, scratches) from the high-poly to the low-poly’s normal map—this keeps the model lightweight while preserving visual depth. For new users, Blender is ideal: Sculpt a high-poly version of your low-poly model, then use the “Bake” feature. Start with simple shapes (like a scratched cube) to learn the workflow without cost.