Create an ultra realistic brush pen portrait using the uploaded photo.

Requirements:

• Preserve the exact identity and recognizable facial features.
• Keep the original hairstyle, facial hair, skin tone, facial proportions and facial expression.
• Transform the portrait into a premium brush pen illustration.
• Use authentic brush pen strokes with elegant thick and thin line variation.
• Blend expressive ink brush textures with smooth artistic shading.
• Preserve realistic skin tones while creating a handcrafted appearance.
• Premium ivory illustration paper with subtle texture.
• Museum-quality artwork.
• Hyper realistic hand-drawn appearance.
• Soft natural studio lighting.
• Sharp focus.
• Ultra detailed.
• Photorealistic.
• 8K quality.