Choosing Shapes
The designer has many choices for how to shape the sleeve length and cap, waistline/hemline and neckline/collar; these various choices and their visual effects are described in their individual entries. The overall shape (silhouette) of the garment is defined by the ease introduced at various points, as described above under "Fitting". In addition, a sweater may have ornamental lines/curves, even images. In general, these lines are chosen to achieve a balanced look; for example, well-chosen style lines can help compensate for body lines considered too long or too angular or too short or too rounded. However, visual effects may be idiosyncratic, and the knitter is encouraged to experiment.
Read more about this topic: Sweater Design