Background Enhancement in Photoshop

I need a skilled Photoshop expert to add background elements to photos. The primary task is photo editing and retouching, specifically adding objects to the picture.

Key requirements:
- Proficient in Photoshop
- Experience in photo editing and retouching
- Ability to seamlessly add background elements

Ideal skills and experience:
- Strong attention to detail
- Creativity in selecting and integrating background elements
- Previous work samples in similar projects

Looking for high-quality work that enhances the overall image without looking artificial. Please include a portfolio with your bids.