I don’t think that is AI art Turing test.

An AI art Turing Test would be interactive with me telling it what to draw and what changes to make and see if what is producing the art is human or AI.

This species of test would also need a multi-day turnaround period on each image. And/or a video stream of the work being drawn.

"Changes" are an interesting one, honestly as a professional artist who has to pay her rent, there is certain complexity of change beyond which I am likely to say "look, we're going to need to renegotiate the budget on this if you want this much of a change from the sketch you already approved", or even "no".