Realistic Pencil Portrait Gift

I need a single, highly realistic pencil portrait drawn from a clear reference photo. The finished piece will be presented as a gift, so accuracy in likeness, smooth tonal transitions, and confident line-work are critical.

Deliverables
• A high-resolution scan (300 dpi, JPG or PNG) ready for printing up to A3 without loss of quality
• The original pencil artwork on acid-free paper securely packaged for shipping (if you can post it; otherwise the scan alone is acceptable)

Please indicate the paper size you prefer to work on, any fixative you normally use to prevent smudging, and your typical turnaround time. A brief portfolio sample of previous realistic pencil portraits will help me confirm style compatibility before I send the reference photo.