After the amount of primer...
Fill
Sand
Primer
Repeat several times
Resist the urge to give up in disgust with a crap casting
Repeat...
We got to the painting.

99% Vallejo acrylics both airbrush and traditional brush applied.
some shading done by airbrush but the main lot
achieved by the redoubtable pastel chalks.

Usual sealing of each stage of the flesh tones with Vallejo clear flat.