Popcorn stitch granny square

I am hatching a holiday plan to make a small blanket with bright colours contrasted with black.  I couldn't find a pattern to match what is in my head so I am worked out a square this morning.

Using - Stylecraft special and a 4mm hook

First create the popcorn "flower"......

Round 1 - 16 treble crochets into an adjustable ring

Round 2 - 8 x 5 stitch popcorn "petals" on alternate trebles from the previous round with 3 chains between each petal

Front of flower....

back of flower

Granny border

Round 3 - attach green to one of the 3 chain spaces behind the petals.  Chain 3 and then double crochet into the 3 chain space.  Repeat 7 times more to create 8 chain spaced "loops"..

From the back,.,,,

Sidewards view to show the double crochet

Round 4 - 3 chains and 2 treble crochets into the first 3 chain space to create granny cluster.  1 chain then 3 trebles, 3 chains, 3 trebles into next 3 chain space to create first corner.  Repeat around to create a square around the popcorn flower. Slip stitch into the top of the first 3 chain to complete the round.

Round 5 - slip stitch into the next 1 chain space.  3 chain and 2 trebles to create granny cluster.  Then create granny cluster corner with 3 trebles, 3 chains, 3 trebles.  Continue around the square with 3 treble granny clusters in the chain spaces.

Round 6 - change to black and repeat the same method as round 5.