Refine Plastic Utensil STP Model

I already have a STEP file of a plastic utensil and the original STL reference that inspired it. Before I send the design to tooling, I need a skilled CAD modeller to bring the STEP file up to spec and make sure it matches the original intent captured in the STL... (Budget: $30 - $250 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, 3D Rendering, AutoCAD, CAD/CAM, Fusion 360, Mechanical Engineering, Solidworks)