Pendant STL File Modification

I need an experienced 3D modeler to modify an existing STL file for a pendant. Requirements: - Modify existing elements, including: - Shape or structure: Adjust specific dimensions and add or remove parts... (Budget: ₹1000 - ₹5000 INR, Jobs: 3D Animation, 3D CAD, 3D Modelling, 3D Printing, 3D Rendering, 3ds Max, Blender, Fusion 360)