These instructions use American crochet terms.
Hook – 4.5 mm
Oddments of dk yarn – obviously these can be made with any weight of yarn, just adjust the hook size to suit.
st – stitch
ch – chain stitch
sl st – slip stitch
sc – single crochet
hdc – half double crochet
dc – double crochet
tr – treble crochet
Ch 4, join with a sl st into a ring.
Row 1 – ch 3, work 11 dc into ring. Join with a sl st to top of ch 3.
Row 2 – work all stitches into the back loops – ch 4, *4 tr in next st, now make a bobble with these 4 tr by dropping loop, push hook through top loops of 1st tr st from front to back, catch loop at top of 4th tr and pull it through, ch 4, sl st in next st, ch 4 – repeat around the circle finishing with a ch 4 and sl st into the same st as the 1st st was worked from.
(Dear me that sounds complicated, I hope you can understand my rubbish pattern speak – basically you should now have 6 bobble petals around, each one with 4 chains each side fastened to row one with a sl st).
Row 3 – join new colour into top of a bobble, *Working over the sl st of row 2, (work 1 tr, 1 dc, 1 hdc, 1 dc, 1 tr) join to top of next bobble with sl st – repeat from * around.
Now row 4 can be finished in 2 ways depending on whether you want to join as you go or sew together afterwards.
So to sew motifs together afterwards – Row 4 – ch 5 (counts as 1 dc and 2 ch), dc into same st, *dc in next 5 sts, (dc, ch 2, dc) into top of next bobble – rep from * around, finishing with dc in next 5 sts and joining with a sl st to 3rd ch of original st. Fasten off.
To join motifs as you go – Row 4 – ch 5 (counts as 1 dc and 2 ch), dc into same st, *dc in next 2 sts, ch 1, miss 1 st, dc in next 2 sts, (dc, ch 2, dc) into top of next bobble – rep from * around, finishing with dc in next 2 sts, ch 1, miss 1 st, dc in next 2 sts and joining with a sl st to 3rd ch of original st. Fasten off.
To join further motifs use row 4 to join each hexagon with a sl st to each other where the ch sts are ( the sl st is worked in place of the ch st, not as well as)