Yesterday I picked up a crochet hook, 4 years later! Made this cotton phonecase/polisher in less than an hour. My son said Wow Mum you’re knitting again. I replied, 'no, crocheting.'

3 strands pink, 1 strand cream.

11 chain. 

Single crochet 10 on the row, turn and work 9 In the round.

1 rounds single crochet.

10 rounds half double crochet.

3 rounds single crochet.

I round slip stitch under previous rounds chain.

You should have 19 sts + the first chain as a stitch on each round.