for this blender experiment I started to experiment with node based materials for eevee. I used a fresnell input node to blend between two diffuse shaders. The mesh is a subdivided cube with a displacement texture.
you can download the blend file here
blender 2.80 experiment 2 - array modifier
blender freestyle sketchy line howto
blender eevee with sketchy freestyle lines
tree animation with blender eevee and freestyle