Changing to another color yarn, start on one of the petal’s beginning. Work 10 single stitches on the chain. On the 11th stitch work as follows: 1 single crochet, 2 double crochets, 1 single crochet (*). Go ahead with the next 10 stitches working on single crochets. Repeat on each of the petals.
If on the Second step you chose a different petal size, beware to make the special sequence (*) on the half-way mark of the chain.
Change to another yarn color and work as follows: Come back to the base we have made on the First step. Start on one of the free stitches, chain 21 and attach with a single crochet to the next free stitch (if we have started on the stitch number 2, attach the chain to the stitch number 4). Repeat till the end of the row.
It is also possible to make this petals smaller than the ones on the other row. It is enough to make a smaller chain. On this case, be careful to chain an odd number of stitches.
Change to the last color yarn and repeat the Third step on the rest of the rings recently created.