Kid Replacement in Photoshoot

I need a professional Photoshop expert to replace a child's face in my photoshoot with a smiling version from another photo.

Key Requirements:
- Switch out one face with a smiling version from 3 options provided
- Use of blurred background for the final image
- Final delivery in PNG format

Ideal Skills:
- Expertise in Photoshop
- Attention to detail
- Experience with photo editing for children