Realistic Oil Portrait in Photoshop

I'm looking for a skilled digital artist to create a realistic oil painting portrait using Photoshop.

Requirements:
- Use of Photoshop to mimic oil painting techniques
- High level of realism in portraiture
- Ability to work from a provided reference image

Ideal Skills & Experience:
- Proficiency in digital painting, especially in Photoshop
- Strong background in realistic portrait art
- Experience with oil painting effects in digital formats

Please share a portfolio with relevant work.