Drawing Form
Transparency, Reflective Surfaces
Highlights, form shadows, cast shadows, and reflected light all work together to create 3D form.
Shading Light and Form - Basics
Cylinder Drawn From a Box in Perspective
how to draw cylinder
Digital Drawing with Photoshop Tools!
Fundamentals: Value Shading
Drawing Illusion 3D Anamorphic - Spoon
Crazy realistic Drawing 3D - Water/glass 2
Crazy Drawing illusion 3D - The Key