Good choice of colours; murky but with enough contrast to not look like just a blob. The rusty talons are most engaging.
Not sure about the grass on the base; it looks a touch to vibrant for a Nurgle model.
being a dark model it was important to have a light coloured base to avoid the model simply vanishing. and this is sort of my standard basing so everything ties together.
though I never stated it was Nurgle. so I guess its a good sign that it is generic nurgle and people recognize it as such haha