Connecting the legs and reinforcing them.  

Building the hips and connecting the legs

Side view  

I create triangles to give the piece stability and strength.

Left side view with triangles 

View from the back

view of the right side

Using scraps to create triangles to strengthen the ankles.  

Looking back, I can now see the hips are not right and are exaggerating the movement. I will have the movement exaggerated when the piece is finished, but for the armature, I will have to tone it down.