Comment by CGMthrowaway

> The idea that these marvels of artistry were painted like my 10th birthday at the local paint-your-own-pottery store always seemed incongruous, at best.

Have you seen medieval art though? https://www.artistcloseup.com/blog/explaining-weird-mediaeva...

The technique is quite different from the "old masters" of later periods that we often think of as fine art.