Above about ballpoint pen technique.
Ballpoint pens can be an excellent medium for serious fine art or illustration. An obvious advantage is precision and control. With pens you can achieve very tight renderings. However that's not all they can do. Ballpoint pens can also be used to express any mood, thought, theme or subject matter. Rendering does not need to be precise to accomplish good works with this medium. Wherever you may stand on the validity of ballpoint as an art medium the following essay and illustrations will provide you with a working knowledge of how it's done.
A Quick Outline
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Start with a light pencil outline drawing on heavy watercolor paper.
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Draw over the outline lightly with ballpoint ink.
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Erase the pencil outlines.
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Use light parallel lines to block in the base color layer.
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Then change(crosshatch) directions for the next layer.
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Work from light to dark. The lightest area will have only one or two layers of ink but the darkest may have five or six.
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Use black for shadows very carefully.
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Highlight your deepest shadow areas with a solid slightly wider ink line.
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Page down for an illustration.
Most artists start their compositions with a sketch or a series of sketches. This helps them visualize and plan the art work. Painters transfer a copy of the sketch they are using to canvas or watercolor paper using pencil or charcoal. For ballpoint pen drawings start with a light pencil outline drawing on watercolor paper.
It is important to use a good quality heavy weight paper like watercolor paper. In my earlier drawings I used light weight drawing paper and the drawings developed ripples that were clearly visible when the drawings were scanned. As you work you will go over an area many times and this causes the paper to warp and stretch leaving you with ripples.
Do not shade your pencil sketch, the graphite gets mixed onto the ballpoint pen nib and muddies your ink colors. Once your outline is down go over it very lightly with your ballpoint pen. Then erase the pencil lines. You can use graphite with pen as a mixed media side by side but not as an under drawing to the ballpoint pen ink.
Practice using your ballpoint pens. We tend to think that ballpoint pens can't create a variety of lines. This is because we usually use them the same way on the same paper every time we write. The same pen can give you different lines depending on how you use it especially when you use a thicker softer paper. First try pressing down hard to get a dark firm line. Next try using a lighter pressure to get a thinner lighter line. Also important to practice are the curve or lack of curve in your lines. A series of parallel curved lines can help build contour and will add depth to your work. Small blocks of short parallel lines will give you a flat looking area with a lot of texture.
Don't try to color areas in as if you are using crayons, instead use a crosshatching technique and build your color in layers. Solid ballpoint ink becomes a dead issue if you try to draw back into it so be sure that's what you want before you do it. It takes patience but crosshatching will give you the opportunity to change colors and create shading and texture. Save any solidly colored areas for last. This gives you the freedom to change your mind.
With light parallel strokes, draw in the base color of each region in the drawing. This is similar to blocking in colors in an oil or acrylic painting and adding details or shading on top of that. Although I have not tried it yet it is possible to tone an area of paper with another medium before beginning to ink it. The choices however, are limited. You can't use anything chalky which can clog your ballpoint pens and smear. You can't use anything waxy like crayons because the ink must make contact with the paper and again the wax can clog your ballpoint pen. That leaves markers or watercolors. Try using them in a even coat without saturating the paper. Using an under color can represent the final ink color or be another color designed to tone, enhance, or change your final color.
Work from lightest to darkest by adding layers of ink over the base color. The lightest areas may have only two layers of ink but darker areas may have five or six. Change your stroke directions for each layer of ink. Remember what you practiced using more or less pressure on a ballpoint pen has an effect on the amount of ink it deposits. Use more pressure in darker areas and less in light areas.
To get strong colors you will need to use many layers of ink. Colors can be modified by combining different ink colors. Work one color into the other with light strokes and change line directions to achieve a crosshatched texture. This will help blend the layers of color and ink more smoothly.
Depth and dimension can be created by careful shading. If you think of your drawing as being three dimensional and remember how light changes as it crosses a shape you will have more success portraying three dimensions. An added advantage of using ballpoint pen is that your shading lines need not be straight they can curve to help define the contour of an object.
Working in a very well controlled layer of black ballpoint ink will help to deepen shadows. Leave it subtle unless you want to accomplish a gloomy or darkened emotional component to your work. Highlight your deepest shadow areas with slightly exaggerated outlines and blend them in.
A printed image is made of dots. (Dots Per Inch DPI ) The display on your computer is created by dots of color, called pixels, as well. (Pixels Per Inch PPI) Impressionists use small brush strokes laid next to each other to create their paintings. Pointillists use round dots of paint for theirs. The lines of a ballpoint pen laid down next to each other and over each other create an image in a way that is not different from those other techniques. You are attempting to take many small units and blend them into one image.