Expert Photoshop Face Edit Required

I'm looking for an expert Photoshop artist to make detailed edits on a face for a professional portfolio photo. The final image needs to be in PNG format.

Key Changes Needed:
- Skin smoothing
- Blemish removal
- Feature enhancement (e.g. eyes, lips)

Ideal Skills and Experience:
- Advanced proficiency in Photoshop
- Strong attention to detail
- Experience with high-end retouching for professional portfolios

Please provide samples of similar work.