Ace job on the nids, very striking and unique! I love the contrast on them, and a wintery theme always gets an automatic +2 from me
As far as the nurgle guys go, I think the painting is well done, but next to the Nids they tend to pale in comparison. Maybe had they been done in a non-traditional scheme they'd stick out more, but well done regardless!
Always love to see painted models/armies.
Hopefully we can all win the fight against unpainted armies being played with