New Cowl/ Snood pattern

So my friend wanted me to make her a cowl/ snood for the winter, and this is what I came up with. 

The Shell and Vee cowl is pretty and lacy but warm and servicable.  Wear it doubled around for extra warmth and snuggliness.

This pattern has only been tested by me, please contact if you need clarification.
Its written in US crochet terms

2 * 100 gm balls of DK acrylic.  (this one eats yarn!)

4 mm hook

Stitches used:
chain stitch
single crochet
double crochet

special stitches:
shell: 5 dc in same stitch
vee: dc, ch 1, dc in same stitch or chain space

With 4mm hook, chain 250, and join, being careful not to twist

Chain 3 (counts as 1 dc)

Round 1:

2 dc in 3^rd chain from hook (half shell made) ch 1  *Skip 4 chains 5 dc in next chain (shell made) ch 1* repeat from * to * until last 4 chains. 2 dc into base of beginning chain 3

Round 2:

Chain 3 (counts as sc, ch 2)  *[dc ch 1 dc] into ch 1 sp on previous round Chain 2, single crochet into 3^rd dc of shell* repeat from *to last sc.  Ch 2 sl st into top of 1^st chain

Round 3:

Chain 3, 2 dc into 3rd chain from hook (half shell made) ch 1 * skip [dc ch 1 dc ] on previous round, 5 dc into sc* repeat from * to last v stitch, 2 dc into base of beginning chain 3

Repeat rounds 2 and 3 until cowl is desired width, ending on round 2

sew away ends

block as desired