I'm not sure what I think about this, I kind of have mixed feelings. 1st it's art and it have beauty, but 2nd that os madde from books - we should read them, not tear them apart for art. And in the same time 3rd - there are many books that are thrown away, or burnt, or just forgotten. Isn't it better to give second chance, second life to it. As I said it's complicated.
Congratulations for the hard work! :)