Sketch Aerobics workshop at the Savannah College of Art and Design Untitled from Jose Gamboa on Vimeo. Untitled from Jose Gamboa on Vimeo.
Demo, on How to Create Shadows
This is a sample of how to create shadows using a light source as reference. The two references coming from the light pole will help you create the shape of the shadow. See the image for reference. This image
Some good reference that you can use to improve your skills
I particularly love Spencer Nugent, he is my new hero. Also do not forget to visit ID sketching, great site with excellent samples.