Ah, and one more thing:
You can also add a color buffer (similar to vertex buffer and normal buffer, but has 4 components - R,G,B,A).
This way you can select the color of individual triangles.
If you’re going for that “Low Poly” style, you most likely will use colors instead of textures.
Which also means that you don’t really need the TexCoord buffer (uv buffer).