Whether novice or aspiring pro, we are Catholics, which means we care whether what we do is right in the sight of God, or whether it is proper or not.
It may have been Chesterton who said that art in the service of the Faith is not excused for its purpose. If it's not good, it's just simply not good.
The line-drawn 'logo-art' of the Roman Protestant, for example, I find to be annoying, and not very artistic. But you can find echoes of that going back decades.
It's a separate question from - what is art? The answer to that is - what school are you from? Be true to, as it were.
And a Catholic must even go beyond that superficial critique, and understand what it true, even what is holy. He or she must be self-aware as to their 'school', and not be bound by that as some standard.
So book on Catholic Art might indeed show appreciation of more than Tissot in his religious art, or Hoffman in the same, or the Italian greats, etc. And opera, supposedly the high art, might come in for more criticism than one might imagine, even ballet.
But it's a broad topic. And I'm sure one would have to address various sub-topics as they are mentioned.