Depending on the photo, parts you want to keep may be erased, or some of the background may remain. On the preview screen, tap "Background Removal Settings", use the "Detection Range" slider to adjust the cutout area towards "Narrower" or "Wider", and then tap "Done".
If some background still remains, trace over it with "Brush" to erase it. If too much was erased, trace over that area with "Restore" to bring it back.
*Moving the "Detection Range" slider or tapping "Done" redoes the automatic cutout, and any manual fixes you made up to that point will be reset. We recommend adjusting the automatic range first, and then fixing the details by hand.