Black Leather Derby Shoe Design

I'm seeking a skilled footwear designer to create a black leather Derby and Oxfor shoe.

Requirements:
- Design a sophisticated and stylish Derby shoe.
- Use high-quality black leather as the primary material.
- Ensure the design is comfortable and meets formal wear standards.

Ideal Skills and Experience:
- Expertise in formal shoe design
- Proficiency in working with leather.
- Strong understanding of comfort and style in formal footwear.

Please provide samples of previous work and any relevant qualifications.