Family Photo Smile Enhancement

I need a skilled photo editor to modify a few family pictures. The main task is to adjust a couple of photos so that the subjects go from not smiling to a moderate smile.

Requirements:
- Change facial expressions from neutral to moderate smiles using reference photos
- Maintain natural look and consistency with existing photo style

Ideal skills:
- Proficiency in photo editing software (Photoshop, Lightroom, etc.)
- Experience in facial expression modification
- Attention to detail and good sense of realism