(a bit of knowledge i’ve managed to collect from modern artists and my own experience)
One thing is for sure: In the process of producing an image, relativity and speed of the lines is most eminent. Whether representational or abstract, the creator must make important decisions. One must also consider outside of the “surface,” since the world does not begin and end within the working frame. “Considering” does not mean taking into account at all times. One can choose to omit the lines outside of the lines created by the artist, that is another decision one must make (going back to my point of making important decisions).
Every mark, line, scribble etc has its own speed. One will be able to calculate this speed with enough experience in creation and/or observation. There are rapid strokes and there are slow strokes. There are also confident strokes and hesitant strokes. One may assume that rapid=confident and slow=hesitant. This is not true.
Every mark, line, scribble exists only in relativity. Any form existing in space can be compared and is related to any and everything outside of the form. The strokes can be relative in several levels. It can be relative in location, speed, size, dimension, form, color, texture, and the list goes on. It is only through relativity that the form can “come alive.” Take for instance, a stroke of a certain size, speed, and color, made on a piece of white canvas. It is not only the stroke that gives itself presence, it is also the space around the stroke. The so called “negative” and “positive” spaces must all be taken into consideration one makes decisions. I emphasize the two words, negative and positive, in quotations because i don’t believe there are such things. All of which we can see is “positive” when creating. (With out one, there is no other.)