So many students hope to watch a professional to learn technique. Technique is your own. Method or approach is always a matter of knowledge. There is no reason for any artist who has the good of his craft at heart to keep such things a mystery. Technique cannot be learned by watching, only by doing. If an artist can tell you how it is done, it is so much better than watching him, or even copying his efforts.¹
¹Andrew Loomis, Creative Illustration, (The Viking Press, New York, 1947), p. 116.