The foot does not need to be forced into a perfect shape. First, learn where pressure is actually available.
The foot, ankle, hip, trunk, and arms work as a sequence whenever you stand, step, walk, or carry. Paying attention to the ground can clarify the whole task without forcing the foot into one perfect shape.
Begin with a simple reference. Notice sensation, ease, range, and control before trying to correct anything. A clear baseline gives you something honest to compare later.
Try this today
Make the idea practical.
During one normal walk today, notice heel, big-toe base, and outside foot without changing them.