Although many will disagree with me (I don't care), I started seeing a trend while teaching art history. A lot of the downward spiral began with the ascendance of Darwinism. As Christianity lost favor and "science" filled in the gaps, things like life's meaning and purpose, beauty, and truth faded from view. This was reflected in art, to the point now we have such banal and narcissistic artists as "Vomit Girl."

The visual arts are communication, whether verbal or non-verbal, and, as communication, art that reflects a scriptural worldview should at least fall into the category of speech, as in Ephesians 4:29.

English Standard Version
Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear.

Artwork of this kind doesn't necessarily need to have images of Jesus, a crown of thorns, or a cross, but a question we could ask is, "What does it communicate?"

It's not that Christian art was ever perfect. There were no Christians producing art until around 150-200 A.D., long after the fall of the 1st century church. What they made were often symbols--paintings or sculptures of concepts never mentioned in scripture.

However, at least the art pointed to something higher, something transcendent that elevated human thought beyond the suffering and toil of this present world. Darwin, and his acolytes pulled that rug out from under civilization, and you get what you get when you do that--a banana taped to a wall.