Tried Blender’s Cycles Toon Shader.
The base shader is a Voronoi mixed with a noise and a brush paint texture shown by Southern Shotty . Added some layers above it and ran them into multiple passes of Toon 
Modelled, Animated and Rendered in Blender, Cycles and Comp’d in Nuke.
Hi-Res and Comp Breakdown: https://www.artstation.com/artwork/L436ol