Start with 3 colors. Each block is 9 stitches so for however wide you want the blanket, count in 9 to get your foundation (always make it an uneven number of "blocks) eg: 19 blocks(makes it about long) stitches then add 4 sc for the foundation row.
Get in touch with your inner flapper with this chic Rose Swirl Headband. The headband pattern has a lovely crochet flower on the side which adds a great deal of visual interest. Wear the headband slightly off-center for a perfectly retro look.