Here are a couple examples for extra reference on development of the leg. The above image shows examples of the lay-in or gesture stage. Here I am looking for weight, through the tilt of the pelvis, and weight bearing leg (shown with straighter lines), while also indicating perspective with some volumes and wrapping lines.
This next drawing shows a second level to the legs development. On top of the initial stage, these drawings use cylinders to describe basic volume and perspective placement, and then have simple anatomical volumes wrapped around those forms.