After a frenzied evening of painting, I've finished the first Hive Guard unit!
Some individual shots below - because these are Finecast and only available in one pose, I decided to use different patterning on each to distinguish them.
I tried to make these models a bridge between the larger monstrous creatures (which have fully patterned carapaces) and the smaller foot troops (which have pure blue carapaces). These guys, being between the two, have small carapace areas in blue but heads and backs with patterns. I think that the approach has worked out quite well.