Lightly draw lines that wrap around the form. If you drew a cylinder for an arm, the cross-contour shows the arm turning in space. This adds the 3D volume before you commit to an edge.
Finally, hatch in the shadow shape using parallel lines or a flat tone. Crucially, in Charles Hu’s method, you do not blend. You leave the hatching visible. This "hatched energy" is what makes the sketch look dynamic rather than photographic. Why Students Search for "Charles Hu Dynamic Sketching" Challenges A unique aspect of Hu’s teaching is his "suffering-based" learning model. He is honest: dynamic sketching is hard. It requires the coordination of your shoulder (for long lines), your wrist (for details), and your brain (for perspective). dynamic sketching charles hu
Now, inside the "cage," you draw the specific C and S curves that define the anatomy, the folds of cloth, or the hard edges of a vehicle. Lightly draw lines that wrap around the form