Jwellery design (ring): sketch and 3D CAD model

I have an inspiration for a ring that I need to mimic with personalized elements. I need a jwellery designer who can sketch out some designs and optionally convert into a 3d cad model I’ll supply reference sketches and sizing once we start; the job is to translate them into a production-ready model... (Budget: min £36 GBP, Jobs: AutoCAD, CAD/CAM)