Product Concept Sketches

I need detailed black-and-white digital sketches of product concepts. You will be working on-site in Geneva, Switzerland in early September for 3 or 4 days.

Requirements:
- Experience in iproduct concept illustration
- Proficiency in digital illustration tools
- Ability to create detailed and accurate sketches
- Availability to work on-site in Geneva in early September

Ideal skills and experience:
- Background in design or art
- Strong portfolio of similar work
- Reliability and punctuality