When I started my artistic journey I often wondered how do i know that my painting is finished or when do stop rendering (because at the beginning you kinda think it's all about the rendering, right :p)?
I have thought about that same question again now, and it does not confuse me anymore. The way i see it is, that you know your painting is finished when you have a consistent painting. Consistent in style, values, anatomy or whatever the subject of your painting is (it always shows if the artist has made conscious deliberate choices and understands their subject).
When you start your painting you set out a goal on how you want your paintin