Bright Theme Photo Editing

I'm looking for a skilled photo editor to create a bright and cheerful mood for my images.

Requirements:
- Change backgrounds to enhance the theme
- Adjust colors and tones for subjects
- Overall image enhancement for a cohesive look

Ideal Skills:
- Expertise in color theory
- Proficiency in Photoshop or Lightroom
- Experience with thematic photo editing

Please provide samples of similar work.