In this little tutorial, I will show you how to create outlines of specular and shadow and create diagonal lines with C4D sketch and toon effect.

Before you start to read the tutorial I highly recommend you to watch some sketch and toon tutorials from Eyedesyn. There are some great tutorials about cel shader, sketch and toon, and some 2D cartoon style.

Eyedesyn’s sketch and toon tutorials

Outlines of specular and shadow

Step 1.
Create two white materials with cel shader in alpha channel for specular and shadow.
*In alpha channel, white means solid and black means transparent.