I created this pattern myself.

Round Cushion Cover

This is a rough pattern. I have left you to join rows and change colours as you wish.
I am right-handed so pattern is written for right-handed crocheting.
Hook 4mm
Double knitting wool

UK names for stitches are used.
st - stitch
ch – chain
dc – double crochet
tr – treble
htr – half treble
fpdc – front post double crochet

uppdc – under post plus double crochet
This one I made up as I did not know correct names for things
Insert hook under post, yarn over, pull yarn through (2 loops on hook); insert hook into space left of post, yarn over, pull yarn through (3 loops on post); finish as treble

SIDE 1 of cushion
Brown Colour
Round 1: Magic loop and 8 sts into it. (8sts)
Round 2: 2 dc into each st. (16sts)
Round 3: 2 dc, 1 dc all the way round (24sts)
Round 4: 2 dc, 1 dc into next 3 sts, all way round (30sts)
Round 5: 2 dc, I dc into next 4 sts, all way round (36sts)

Beige Colour
Round 6: 3 tr, 2 ch all the way round (12 sets of trebles)

Pale Orange Colour
Round 7: 1 dc, 2 ch, 1 dc into each space, 2 ch between clusters, all way round
Round 8: 2 htr, 1 ch, 2 htr into centre of each cluster, 2 ch between clusters

Brown Colour
Round 9: Do this all the way round:
1 dc into 2nd htr;
1 dc, 1 ch, 1 dc into centre of each cluster;
1 dc into next htr, 1 ch,
1 tr inserting hook into space between clusters in pale orange row, 1 ch

Orange Colour
Round 10
2 htr, 2 ch, 2 htr into centre of cluster, 1 ch
1 uppdc around brown tr in previous row, 1 ch
Round 11
3 htr, 2 ch, 3 htr into centre of each cluster, 1 ch
1 uppdc around uppdc in previous round, 1 ch

Rust Colour
Round 12
4 htr, 2 ch, 4 htr into centre of clusters, 1 ch
1 uppdc around post in previous row, 1 ch
Round 13
5 htr, 2 ch, 5 ht into centre of clusters, 1 ch
1 uppdc around post in previous row, 1 ch
Round 14
1 htr into each of 4 htr on right side of cluster,
4 htr into centre of cluster,
1 htr into each of 4 htr on left side of cluster
1 ch, 1 uppdc, 1 ch

Orange Colour
Round 15
1 dc into each of 4 sts on right side of cluster,
1 dc, 1ch, 1dc, 1ch, 1dc all into centre of cluster,
1 dc into each of 4sts on left side of cluster,
1 uppdc around post

(From here on we will refer to them as petals)

Brown Colour
Round 16 (start at top of petal)
2 dc into space at top of petal, 1 ch, 2 dc into next space
1 htr into each of next 3 sts, skip 1, 1 fpdc at post, skip 1
1 htr into each of next 3 sts
(11 sts per petal)
Round 17
2 dc into space at top of petal; 1 dc into next st
1 htr into each of next 3 sts
1 tr into next 2 spaces (on either side of post)
1 htr into each of next 3 sts; 1 dc into next st
(12 sts per petal)
Round 18
1 dc into space between 2 dc at top of petal in previous round; 1 dc into next st;
1 htr into each of next 4 sts, skip 1, 1 htr into each of next 4 sts, 1 dc
(11 sts per petal)
Round 19
1 dc into top of petal; 1 htr into next 4 sts; 1 tr into next space; 1 htr into next 4 sts; 1 dc
(11 sts per petal)
Round 20
2 dc into space between dc in previous round
1 htr into each of next 4 sts,
1 tr into next 2 sts
1 htr into each of next 4 sts
(12 sts per petal)
Round 21
2 dc into middle of 2 dc in previous round, 1 htr into next 4 sts; 1 tr into next 3 sts; 1 htr into next 4 sts
(12x13=156 sts)
Round 22
2 htr into middle space, 1 htr into next 12 sts
(12x14=168 sts)
Round 23
2 htr into middle space, 1 htr into next 13 sts
(12x15=180 sts)
Round 24
2 htr into middle space, 1 htr into next 14 sts
(12x16=192 sts)

SIDE 2 of cushion

Rounds 1-14 as in Side 1 of cushion

Pale Orange
Round 15
1 dc into back of every st and ch
(catching 2 threads for each makes it stronger)

Brown colour
Round 16
5 dc along the top of petal; 1 htr into next 2 sts
1 tr, skip 1, 1 tr (above post), skip 1, 1 tr
1 htr into next 2 sts
(12 sts per petal)
Round 17
(foundation row for polka dots)
1 dc, 2 ch, skip 2 sts, 1 dc
Do this all the way round, making sure to do 1 dc either side of the 3 tr in previous round

Orange Colour
Round 18
4 tr cluster into 2 ch space; 2 ch; 4 tr cluster into next space
Do this all the way round

Brown Colour
Round 19
2 dc into each dc in foundation round
1 fpdc around each polka dot
Do this all way round
Round 20
1 htr into each st all the way round
(147 sts)

Rust Colour
Round 21
1 htr into 6 st; 2 htr into next st
Do this all the way round
(168 sts)
Round 22
1 htr into 7 sts; 2htr into next st
Do this all the way round
(189 sts)
Round 23
1 htr into 62 sts; 2 htr into next st
Do this all the way round. The purpose of this row is really just to make sure that you have the same amount of sts as other side of cushion before joining (192 sts)

Join the 2 sides
I used 1dc, 1ch all the way round to join both sides together.