Proposal Picture Enhancement

I'm seeking an expert to fix color issues on some proposal pictures. Currently, the images are too dark.

Requirements:
- Increase the overall brightness of all the photos and in specific areas (flowers especially on the left side in some of the photos)
- Remove the sofa in pics
- Fill the gap with candles (to the right),
- Smoothen and Clone the black curtains to replace white wall background if possible
- Improve color accuracy and vibrancy

Ideal Skills and Experience:
- Proficiency in photo editing software (e.g., Photoshop)
- Strong understanding of color correction
- Attention to detail and creativity