Its forward edge is split with another point. This middle pointwill go miles towards shaping the ball odf the foot as it indents towards between the toes. Grap those between toe points and raise them in the y axis apropriately. Again I stress, use reference if you need it. Over time, memories of form tend to become stylized.
Reference is a good way to stay fresh.
Plot points around the foot in the z axis, and somewhat higher than the sole in the y axis. Edit them into place using your background sketches to guide you. Checking our model in subdivisions again shows how much we've added to our model. When you are finished with one row of Quadrangles, begin another. You will notice I left the toe area alone.