Update cover image
The reording cover image can be any image at all including one you take the the phone camera in the moment. Image takien witht he phone camera are private and are not part of the phone system gallery.
A face, or an animal or favorite relative woud work. It there to jog you memory what the recording contains.
Recording album covers have a blue background indicating it is effectively a folder of audio recording. The contents of albums are flexible and easily edited. Change the cover to resore it as a single recording.
The Pending screen offers a consolidated set of words, images and tags that would allow you to find that recording in the future.