Feet

I have found feet a difficult part for me to draw accurately.  During gesture drawings, we did not have to add them in as full shapes, rather lines to show they existed.  This was great base work for fully adding them in later. 

With feet, we learned about the plane changes and I found it helpful to draw contour lines indicating where these plane changes are.  The next time I draw a foot I will put more value on it.  Also, be sure to make the toes more square shaped to distinctively show the plane changes.  In my opinion, adding feet to a human standing adds a lot to the drawing.  It gives the sense of stability and that the figure is grounded.