STL Design for Silicone Product

I have a hand-drawn concept for a small personal-care item that will be molded in medical-grade silicone. The sketch is clear and I already have the exact overall and feature-by-feature measurements, so you will be working from defined dimensions rather than guessing... (Budget: $30 - $250 CAD, Jobs: 3D CAD, 3D Modelling, 3D Print Design, 3D Rendering, AutoCAD, Fusion 360, Product Design, Solidworks)