I remember 40 years ago I took a piece of my art to a frame shop. It was a watercolor. The frame shop owner tossed the painting on the floor to look at it. Being new at art, I thought that was some kind of an art world thing. I later learned there are different ways to look at your work to study it for errors like hold your painting up to a mirror or looking at it upside down. In any case, lately I try to not get into to big of a hurry to say a painting is finished. At least for me, at times I may become too easily satisfied with the painting I called finished. It pays to study it over and over again after we think a painting is finished. An even better painting may result in pausing before we put it out for others to see. Finished? It is a good question, I believe.