Once you have your yarns plied, have your singles to stay singles spun, and all of your yarns finsihed, it's time to knit some swatches.

What you knit is up to you. I recommend using the same three stitch patterns accross the three yarns, stockinette, a texture stitch, and a lace stitch. I use a simple cable for my texture, because I like to see the how the ply effects the lift of the cable. I use a small (around a 6 stitch repeat over 8 rows) lace stitch that's easy to memorize.

How big you knit your swatches is based on the size and amount of yarn you have spun. I try to knit a 3"-4" square with at least two repeats of the pattern stitches. Sometimes I don't have enough yarn, and I have to rip and reknit. That happened this time with my 3-ply yarn.

Knit your swatches, and block them. Next time we'll study the magic of how ply effects stitch patterns.