Lines which are drawn or implied which are not either horizontal or vertical create a dramatic effect. Diagonal and angled lines help to accentuate a subject or lead the eye to a specific place in the drawing. Sometimes, the diagonal lines are made from parts of the subject. Sometimes the lines will be part of the background. As with any tool, don't over use the idea. Ideas that are over used become boring.
You will be able to obtain a whole book dedicated to the topic of composition, so I'll mention that it is very important, and advise that you find some extra literature on the subject. The purpose now is to define the term. Composition obviously comes from the verb to compose which means to put parts together into a new whole. In a picture, the parts that are available include at least the following:
A good composition will hold the viewer's attention, and let the eye explore the drawing and rest on the desired subject matter. All the elements should compliment and enhance the subject, and there should not be two or more equally competing objects in the drawing... unless of course you want and can control this effect. It is also a good idea to arrange the objects so the viewer's eye is held within the frame. A drawing which contains an arrangement that causes the eye to leave the frame is unlikely to hold interest. Some, or perhaps most people can feel a good composition when they see it even without being able to explain the theory behind it. If you can do this, then take advantage of it by playing with the elements until they feel right. This is a good reason to draw several sketches.
(C) Jeremy Lee 2010, all rights reserved.
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spOOk's art is owned by Jeremy. He has practiced drawing and painting for about 40 years, and might get good at it one day. spOOk's art is focused on graphite portraits.