Finally! I recently started another Schoolism course. The last time I did one was back in 2015 with Dice Tsutsumi and Roberto Kondo called Painting With Light and Color, which I found super beneficial. The one I started last week is called Fundamentals of Lighting by Sam Nielson.
Wow. I must say that this course is exactly what I needed. The first lesson Sam jumps right in with the Properties of Light and Advanced Lambertian Reflection, throwing in a bit of quantum probability for good measure. I won't go too deep with what lesson one covers, but rather show you how I tackled the homework assignment.
The assignment required that I paint and light a simple scene in greyscale. All that we were provided with was a basic line drawing and a light source, and it was up to us to render the final form.
Below is my final image, after I went through and critted my previous test. The illustration is painted to Photoshop CS6.
Below is the scene I painted before I went through the critted lessons. From what I interpreted the shadow isn't particularly true to the light source which you can see in the image below. The "terminator" is also not very accurate.
Following some of Sam's tips I created the light rays, and mapped in the shadows and their falloff as well as what I hope to be a more accurate terminator. The green line is where the terminator would more likely be situated, and the purple markings are an indication of the shadows.
I must just put out a disclaimer that I am doing the self-motivating subscription course, and my work isn't individually critted by Sam. The changes I did to my first pass were done by observing the crits to a fellow "classmates" artwork which are provided as part of the course material.
Terminology and links: