For example, you could work a project using only red yarn, or you could alternate red, yellow, and blue yarns for a colorful result.
For example, if you are working with a medium worsted weight yarn, then a hook within the range of an I-9 (6. 5 mm) through a K-10 (9 mm) will yield the best results. [1] X Research source
Keep making chains until you have the desired number. You may chain as many stitches as you like, as long as you chain an even number. For example, you might only chain 10 stitches if you just want to practice the moss stitch, or you might chain 120 stitches if you want to make a moss stitch blanket.
