Square Shoulders Headshot Edit

I have a single professional headshot in JPEG format that needs a subtle but important tweak: the shoulders must sit perfectly square to the viewer. Please adjust the posture so the subject looks naturally aligned—no warping or obvious distortions—and keep skin tones, lighting, and sharpness exactly as they appear now. You may work in Photoshop, Lightroom, or any comparable retouching tool, but the finished file should be returned to me as a high-resolution JPEG matching the original dimensions. If you prefer, you can also include a layered PSD so I can review the adjustment, yet the flattened JPEG is the priority deliverable. Turnaround is flexible within a day or so; accuracy and a natural look are more important than speed. Let me know if you need any additional reference points from me before you begin.