SketchUp little Ceiling Model - urgent

I need a clean, accurately-scaled vaulted ceiling modeled in SketchUp so I can drop it straight into an existing project file. The existing walls, floor, and key reference points are already modeled; I’ll send that .skp file as soon as we start... (Budget: €10 - €20 EUR, Jobs: 3D CAD, 3D Design, 3D Drafting, 3D Modelling, 3D Rendering, 3D Visualization, 3ds Max, SketchUp)