Insert the edges in red on the top as shown



Adjust the vertexes as on the images



On the part of the ankle, extrude and adjust the edges as on the images.



Continue as here.


For the edge, uniform Shift+Scale to extrude inwards

Adjust to have a regular edge.




Finally to finish, a last extrusion downwards to simulate the interior of the shoe. Adjust the vertexes to result in a more regular form.

Make an extrusion for the sole with one Extrude and Bevel only.


To preview the final mesh after smoothing, apply Meshsmooth temporarily.

Possibly adjust the vertexes of the LPM cage to give a more regular form.



Here are the Values of the Crease parameters in the Meshsmooth modifer.



The look rf the show with finalised creases.
As usual preserve the intact stack with Editable Mesh and Meshsmooth.