Gesture drawing is a foundational figure drawing skill. Although you can approach gesture drawings in many ways, most strategies involve doing quick drawings (anywhere from 10 seconds to five minutes) that simplify the subject into as few strokes as possible, as well as favor dynamism over accuracy and large, general forms over small details.
When doing gesture drawings of the full figure, axis lines are used to capture the angle between a pair of landmarks on the body, most often of the hips or shoulders.
In the drawing below you’ll see how you can use a combination of dynamic directional marks and axis lines to capture the angle of the wrist as well as the line of the knuckles. This is an excellent way to quickly capture the most prominent forms and proportions of the hand. Remember, your gesture drawing will lay a light foundation upon which you’ll build the rest of your drawing, so start off as lightly as you can.