Realistic Office Portrait Editing

I need a single photo transformed so it looks as though it was shot in a classic office environment. Please replace the existing background with a believable classic-style office scene, remove the eyeglasses cleanly, and change the current outfit to a crisp white shirt. The finished image must look completely natural, with consistent lighting and shadows, and be delivered in true HD resolution or higher.

You may work in any professional-grade software you prefer; I’m not tied to Photoshop or GIMP as long as the result is flawless when viewed at full size. Keep the key edits on separate layers so I can request minor tweaks if necessary.

Deliverables
• High-resolution JPEG or PNG ready for web and print
• Layered source file in a standard pro format (PSD, XCF, etc.)

I’ll send the original photo once we agree to proceed. Please share your estimated turnaround time and a couple of samples that show similarly realistic edits.