Background Swap Photo Editing

I need one or several photos cut out cleanly and placed onto a different setting. The current background should be removed entirely, then replaced with a custom backdrop that I will supply. I already have the replacement image ready to send over right after we start, so you won’t need to source anything. Accuracy around hair edges and fine details is important to me, and the final files should be delivered in both layered PSD (so I can tweak if needed) and high-resolution JPEG/PNG versions. If you’re comfortable doing precise background removal and seamless compositing, let’s get this done quickly.