Length: 12.6 inches (32 cm)
Level: beginner
Recommended crochet hook: US size B/1-C/2 (2.5 mm)
Materials: embroidery needle & black yarn, 2 safety eyes 0.3 inches (8 mm), fiber filling.
Yarn: Rainbow Cotton 8/4

How much yarn should I use?
1 x main color: Light Lime (017)

12 different colors for the body:
1 x Pastel yellow (053)
1 x Petrol blue (035)
1 x Light coral (050)
1 x Light green (019)
1 x Cobalt Blue (096)
1 x Burned orange (066)
1 x Pastel pink (042)
1 x Turquoise (033)
1 x Dark red (059)
1 x Pastel Mint (025)
1 x Abricot (065)
1 x Baby pink (044)

Abbreviations:
sc = single crochet stitch
sl st = slip stitch
mr = magic ring
[…] = amount of stitches
(…) = number of rounds
… = repeat.

Head
In the main color:
R1: 6 sc in a mr [6]
R2: increase 6x [12]
R3: 1 sc, increase 6x [18]
R4: 2 sc, increase 6x [24]
R5: 3 sc, increase 6x [30]
R6: 4 sc, increase 6x [36]
R7-11: 1 sc in each stitch (5 rounds) [36]
Insert the safety eyes between round 9 and 10 with an interspace of 8 stitches between the eyes.
R12: 4 sc, decrease 6x [30]
R13: 3 sc, decrease 6x [24]
R14: 2 sc, decrease 6x [18]
R15-18: 1 sc in each stitch (4 rounds) [18]

Color change
You change color by finishing the last stitch with a new color.
R19: Work 1 round of slip stitches [18]
R20: Work sc over sl from the last round, and place them in the same stitch as you placed the sl st.
R21-24: 1 sc in each stitch (4 rounds) [18]
Repeat … 12 times. Stuff the worm, and do so continuously as your work develops.
After 12 color changes, crochet like this using the main color (light lime):
1 sc in each stitch (3 rounds) [18]
1 sc in each stitch (3 rounds) [18]
1 sc in each stitch (2 rounds) [18]
1 sc, decrease 6x [12]
decrease 6x [6]
Stuff the worm firmly.
Cut the yarn and insert the thread through the front loops of the 6 last stitches and tighten.
Weave in the ends.