When there is a high level of detail, it makes me think about the hours that went into that work, the same as with the faces, in addition to knowledge, many hours. The old woman is beautiful.
I guess we never know as artists are known to be undecided and always trying to add something as a work is never finished in their eyes, but apart from this aspect, yes, I agree, we have no idea how much time goes into a detailed work. I guess the tight answer is "a lot".
Looks like no one has any idea what the Art Studio is, but it's fun guessing 😆
I assure you that some paintings take a week to complete, if the level of detail is high. And if there are faces, it also depends on that, on the detail. Have a wonderful day!