Negative space is the space around and between the subject of a image.
I found it by looking at the things that were only the orange paper in the background to help me in my stool drawing. For my cutout, I had some trouble because I wasn't sure what I wanted to be my negative and what I wanted to be my positive. But I later found it by cutting out the background of the owl. Seeing things in negative space helps artist because then it can help with seeing shapes better in different types of art styles. And different shapes in art.
Seeing in negative space does enhance drawings because then not only are you focused on the object in the picture, but the space around it as well can help you on the basic outline shapes. Even so, it's very hard to master that type of art style because your so used to the object instead of the space.