Realistic Multi-Person Portrait Sketch

I'm looking for an artist to create a realistic portrait sketch based on my imagination. The main focus is on one person, but there will be multiple people in the picture.

Key Requirements:
- Create a detailed and accurate realistic portrait.
- Ability to interpret and visualize based on descriptive instructions.
- Experience in drawing multiple figures in a cohesive composition.

Ideal Skills and Experience:
- Proficiency in realistic portrait drawing.
- Strong imagination and visualization skills.
- Experience with multi-figure compositions.

Please provide samples of previous work.