Toon/Sketch Shader

A HLSL shader I made that renders objects to look like they are drawn. It is essentially a toon shader with lines that are sketchy ( different sizes over time) and with an overlay in the darker areas so that it looks shaded. It also has a low tolerance for depth so that minor details appear, and seemed drawn in.
It uses the more accurate approach to edge detection ( change in depth instead of change in colour )