yaoyueyi sometimes files that are deleted can still be found in the "trash bin" depending on the OS you are using and how it corresponds with set files... if you have checked that already and not found it, then:
oh, well... I thought it might be something like that (why I said "not sure if that'll help"), I know photoshop decently, and can understand perfectly what you mean... I know it would take a lot of meticulousness that you likely don't feel up to doing (especially for a free work) to do it without the layers, so I will just keep what I got until//unles I find a better cover.;,;. (some change their covers once a volume, I will only do so if I can get a better one, which I doubt with my lack of resources).;,;.
So thank you for what you have done.;,;.