Whether you are a beginner or not, this subject is probably one of the most complex of drawing learning. Drawing the human body requires not only a certain knowledge of anatomy and human proportions, but also the ability to analyze and quickly make posture and movement. For this, it is necessary to know how to begin his drawing in a dynamic way, by working his gestures. So I propose you a technique to draw characters of post-model, by quickly catching the posture.
Always start by observing the model globally. The whole thing is to analyze the movement of the body and the posture as a whole.
The overall dynamics of the body can, in general, be summed up in one line. This famous line is vertical and goes from the top of the head to the foot of the character. This is the starting point to structure your drawing and capture the attitude and movement of the model. This one does not necessarily share the body in two, but must make the connection between the bottom and the upper part of the body when your character is standing. This route must be executed in the most fluid way possible, as it must involve the rest of the construction. In the case of a character folded on itself or with the bent bust, this line will be split in two with a part indicating the direction of the bust, and the other the position of the pelvis and legs.
Then place the main horizontal markers, ie the line indicating the position of the shoulders and the line indicating the middle of the body, at the level of the pubis or the top of the legs. This line is a mark representing the articulation between the hip and the legs (the femur).
Finally draw lines representing the arms and legs. All these lines must be dynamic. To promote fluidity and movement, always prefer a slight curve or ripple to a straight or broken line. Feel free to exaggerate these curves to accentuate the liveliness of your drawings.
You get a wired structure, a bit like a wire sculpture.
This rapid construction should schematically represent the skeleton of your model and define the pose in its main lines. So much for these tips.