After the first foundation single crochet is complete, each additional stitch is made following these steps.
To make the next foundation single crochet stitch: Insert hook in last ch-1 made (see illustration A), yo, pull up a lp, yo, pull through 1 lp on hook (see illustration B -ch-1 completed), yo, pull through all lps on hook (see illustrations C and D-sc completed). Repeat for each next single crochet foundation stitch.
Next Foundation Single Crochet