Hello,
It looks good as a style. I like that. I think the style fits the audience. But I am a sucky graphic designer.
However it's not immediately known that what you offer is a book (at least in the medium of a book).
If people visit the page without a context, they might not expect a book at the end of the page. You prepared us here that the page is about a book, but will that be the case with everyone visiting it?
You can do a little quick research to see if random people get what is this about.
https://usabilityhub.com/ provides 5 seconds tests - people see the page for 5 sec and they answer a simple question, for example - "what is this page about" or something like that. The 5 sec tests are pretty cheap. Last time used that site you could trade making 1 test for someone else for 1 participant for your test.
10 people should be enough to spot patterns.