Drawing From Imagination by Glenn Vilppu
https://artschoolvideos.com/course/drawing-imagination-self-study/
"Learn to draw using critical thinking and visualization to create from the imagination. Master Artist Glenn Vilppu teaches that drawing does not occur on paper, but in the mind. He offers fascinating insights on how to draw analytically while still managing to keep a drawing life-like. Communicate the story a drawing is trying to tell and learn how it can be best expressed. This is a great class for all artists; it even includes Glenn’s critiques of student work in this classroom video experience.