Draw two circles at the top and bottom and in between, draw a rectangle shape. Now connect both circles with a curve line. Partition the top circle via vertical and horizontal lines.
Draw lines for hands, legs and gun. Draw two circle at the point of knees and four various style shapes for hand and feet.
Draw shape over face part as above.
Cover up chest part by drawing jacket.
Cover up the outline of legs with dress.
Draw four circles on head section and draw some curve lines across the head.
Enhance the work on legs and waist.
Enhance the arms.
Draw shape over the chest and abdomen.
Add lining to the waist part and draw hands.
Enhance the upper part of the gun.
Enhance the lower part of the gun to complete it.
Make some improvement in the head and waist part. Draw feet to complete the diagram.