chain as many stitches as needed ensure it is an even number
single crochet in every stitch.
Chain 1,turn, *single crochet in 1st stitch, chain 1, miss a stitch, single crochet in next stitch*
repeat from * to * until the row is finished
Turn, chain 1 *single crochet in the space, chain 1* repeat to end of the row
Repeat row 3 as many times as needed till required length.