Pattern description from Knitting for Dummies: “The best way to see how these increases and decreases work in garment shaping is to try them out yourself. the sampler given here lets you practice the moves to see how they work and what they look like. Figure 8-18 shows this sampler, but if you want to see it in color, check the color insert. When working a sampler, use medium-weight yarn in an easy-to-read color - white or something bright - and size 7 or 8 needles. Refer to the ‘Knitting Notebook’ if you have any questions on how to work the specific increases and decreases.”
Knitting Tip: “To make the edges on your swatch (called selvages) attractive, slip the first stitch of every row knitwise (go into the first stitch as if to knit it and move it over the RH needle without working it) and knit the last stitch of every row.”
Just an increase/decrease sampler to help learn how to increase and decrease. You cast on 21 sts, decrease down to 11 and increase back up to 21 a few times, using different techniques each time.