In this tutorial, you’ll learn step-by-step how to:
Use Vertex Paint to blend moss and dirt naturally on meshes
Use Mesh Paint to combine materials like grass, stone, and soil
Use Texture Paint to hand-paint unique details directly on assets
https://dev.epicgames.com/community/learning/tutorials/j2bv/unreal-engine-tutorial-vertex-paint-mesh-paint-texture-paint-yellow-tree-academy