Custom Background Photo Editing

I have a set of photos that need the original backgrounds completely removed and replaced with a specific image I’ll supply for each shot. Your task is to create a clean, natural-looking composite: precise masking around hair and fine edges, seamless colour and lighting balance so the subjects sit convincingly on the new backdrop, and no stray artefacts or halos.

I’ll send you:
• The source photos (high-res JPEGs)
• The custom background image(s) for each file

You’ll return:
• Finished photos in the same resolution, saved as high-quality JPEGs
• A layered PSD or PNG with transparency for future tweaks

Please let me know roughly how many images you can turn around per day and any portfolio examples of similar background-replacement work. Fast, tidy, professional edits are what I’m after—if the first batch looks great, there will be plenty more to follow.