Jewelry: You may wish to remove your jewelry, especially rings and bracelets, prior to crocheting. Yarn can catch on and cause issues.
Long Hair: If your hair is long enough to get in your way, be sure to comb it and tie it back before you start crocheting.
Cats: If possible, keep cats out of the room when you are crocheting. A cat can't seem to resist a moving ball of yarn.
Step by Step
Step 1: With Color A, ch 41 (46, 51, 55).
Step 2: ROW 1 (RS): Skip 1 ch (does not count as a st), sc into next 6 chs, hdc into following 28 (33, 38, 42) chs, sc into last 6 chs - 40 (45, 50, 54) sts.