It’s like the top 2 layers have no roof, but the bottom layer does, and how do I color each layer individually? I seem to be only able to color the entire thing.
To colour individually you need to make separate meshes. You would probably need to one upload layer of your star and colour them and stack them in studio.
You likely have the faces Normals flipped in Blender.
Google how to invert Normals to find a tutorial about it.
Also google how to colour or ‘bake’ Blender meshes. Roblox doesn’t do this when you import a mesh, but it does give a TextureID Property (just below the MeshID line) for the visual wrapped colour of your efforts in Blender.
@EternalDragon_X using DoubleSided doubles the amount of rendering needed for your computer to handle, which reduces performance. There was a post about it when they introduced it, stating it was mainly meant for items like leaves, or pieces of paper.
No worries.
Basically it’s probably because the Mesh wasn’t created properly. Using DoubleSided works, but I think it also creates problems with rendering since instead of an external face being rendered next to an external face it’s trying to render an inside next to an outside face, which causes shadows and unrealistic visual behaviour.
If a mesh appears inside out in the studio, that means your model is inverted. Search up backface culling to see it in blender and alt n for the normals tab(in edit mode).
As for the colors, you can’t import blender materials directly into the studio. Only textured meshes and vertex color. (I recommend you do some experiments on textured images to see what imports)