Hello Starkdog,

Here is the link to Dr.Geep tutorials.

http://drgeep.com/NPU/Directories/dir01-08.htm

In the design of your pose, don't forget to bend the trunk forward when squatting as illustrated in the attached figure. This is mandatory for the model to keep balance. The gravity center of the body should be within the perimeter defined by the foot. The hip, knee and ankle angles show in the figure are approximatively the real angle. Don't push the ankle bending too much. Instead, squat on tip toes.

Allstereo