When
The subject has hard edges, such as packaging, shoes, or a mug.
Then
Inspect corners, narrow gaps, reflective areas, and any contact shadow separately.
A sharp-looking outer contour can hide missing handle openings or clipped product details. In an online listing, those small errors can change the apparent shape of the item.
When
The subject has soft edges, such as hair, fur, or translucent fabric.
Then
Place the result over light and dark test backgrounds before choosing the final backdrop.
Fine strands can disappear on one color while a bright halo becomes obvious on another. A remove bg result that looks convincing on transparency may need edge refinement for its final setting.
When
The image is headed for a graphic with text or a tight crop.
Then
Build the composition first, then check the cutout at its actual display size.
A technically clean extraction can still cover a headline or feel cramped. Online examples are most useful when they show the subject in context, not only by itself.