For a book cover, I would likely commission an actual human artist (I have ideas, in fact). My prompting skills are fine for SS and (redacted) cover images but for a book cover, I would hold myself to a higher standard that I am not sure I could pull off. That's not to say good AI covers are not possible, just that I am not sure I am the one to pull it off. And, frankly, in an era where jobs may be on the line due to AI, if I was putting money into a project like a book, I would like to see a human get some of it.
That said, yours looks pretty dang good. I can definitely peg it as AI (women's faces generated by AI have a same-i-ness about them, for one thing) but it wouldn't put me off. I think part of the problem is writers thinking they don't need to put effort in, just write a prompt and use the results. So you get crappy covers that really give AI covers a bad name. I don't see that in yours, as I say, but you don't need to spend much time looking at Kindle or other e-pub services to realize a decent to good AI-generated cover is more of an exception than a norm.