I think there is a bit of both. If an artist learned on their own, it may be more intuition (or, step-by-step, but they don't realize it because they don't thi

I think there is a bit of both. If an artist learned on their own, it may be more intuition (or, step-by-step, but they don't realize it because they don't think about the individual steps). But if you take a drawing class you will learn a lot of steps that you can reproduce. A good striking example, do a video search for "two point perspective drawing", and look at some of the tutorials / demonstrations that come up.