Image Enhancement for Portrait

I need an image enhancement for a portrait. The tasks include:

- Whiten teeth to a natural white using JPEG format
- Extend the blue wall to create a cohesive background, matching the existing molding
- Remove the couch from the image
- Add more hair to ensure it doesn't appear thin

Ideal skills and experience:
- Proficiency in image editing software (Photoshop, etc.)
- Experience in photo retouching and background manipulation
- Attention to detail for a natural look