Bubble Bobble Hat (Free Pattern)

Flickr pics here.
Measurement: 50cm head circumference, 19cm from forehead to top of head
Materials:
1 x 50g ball 12ply wool in MC
1 x 50g ball 12ply wool in CC
(I used Rustic 12ply from Bendigo Woollen Mills)
Needles: 6.5mm (US 10.5)
Gauge: 18 stitches x 18 rows in bubble stitch pattern on 6.5mm
Bubble Stitch Pattern:
Row 1 (WS): *P3 tog, (K1, [...]