Thanks all
Terra - its from aradia miniatures, Harley and the race horse.
Arch - yep, GW paints are still one of the best.
aniku - I picked 5-6 colours, dark browns, red, buff, tan, yellow. Using AB layed down the basic colours then followed the ref. photo of a snail shell feathered the lines/strokes in (keeping note of the directions).
Glazed in some shadows with a little black. Then brought up the highlights with select places of deck tan / ivory.
To tie it all in I used some winsor & newton burnt sienna ink to glaze over. is got a semi gloss look that gives a nice shine without being to glossy.