SketchUp Toy Set 3D Modeling

I need a complete SketchUp (.skp) file and clean, watertight 3D model for a children’s nerf gun toy. Please include a concise but detailed project proposal outlining your workflow, the software versions you’ll use, and how you’ll handle scale, tolerances, and part separation... (Budget: ₹600 - ₹1500 INR, Jobs: 3D Animation, 3D Design, 3D Modelling, 3D Printing, SketchUp)