CAD Design for 3D Prototype

I need a medium-detail prototype model designed for 3D printing. The CAD drawing should be delivered in STL format.

Ideal Skills and Experience:
- Proficiency in CAD software
- Experience in designing prototype models for 3D printing
- Understanding of creating medium-detail designs
- Ability to deliver files in STL format

Please ensure your design is suited for 3D printing and can represent a prototype accurately.