Knowing when to stop is probably the most important skill that an artist possesses. Sometimes I have it but most often I'm skidding around unaware and I keep adding things to the drawing.
As soon as I added the little marks on the left side of the duck I regretted what I had done. It was too much. I think without them you could still tell that it was a duck, swimming away on a foggy morning. You can see that right?
But I drew those cute little marks to indicate the feathers --just a little naïve calligraphic noise. Just having fun --but they are unnecessary.
But, this is a drawing and it is all about searching, the struggle, showing the scars, etc.
Today, I drew a goose. No struggle here.