April 19, 2017
Although Sight-Size is most often discussed as an approach to portrait painting, Sight-Size is not just for portraiture. In fact, the first written use of the term relates to figure drawing. April 5, 2017
I would imagine that all teachers have a list of recommended books which they consider to be essential reading for their students. Mr. Gammell was no exception. This article passes that list onto you. My sources are a half-dozen of Mr. Gammell's former students. March 23, 2017
Mentioned many times on this site is that you will draw better when you have an accurate eye; that learning to draw is actually learning to see. To help you with the process, in early 2016 I wrote an ebook, titled An Accurate Eye. Recently brought to my attention is an online eye accuracy trainer: The Eyeballing Game, that nicely supplements the book's exercises. March 8, 2017
Depending upon how deep you want to go, the principles of light and shade can be quite complex. Nonetheless, everything hinges on the fact that light travels in a straight line. Upon hitting a surface light also reflects back in a straight line. How much of that light reflects back to your eye is dependent upon whether the surface is in the world of light or in the world of shadow.