Blender Model Shape Fix for Printing

I have a Blender scene that only needs one thing: the 3D model inside it must be tweaked so its overall shape is correct before I send it to the 3-D printer. and also a bit of smothening in a part is needed involved—this is strictly a geometry pass focused on clean, accurate surfaces... (Budget: ₹100 - ₹400 INR, Jobs: 3D Animation, 3D CAD, 3D Design, 3D File Scaling, Slicing & Print Preparation, 3D Modelling, 3D Post Processing, 3D Printing, 3D Rendering, Blender, Maya)