making of the shoe
 
a simple tutorial on box-modeling - page 3
   
   
 
In a Side view, with ignore backfacing unselected, select those vertices as below and move up as in the figure to make the side of the sole
 
 
  Here you can see how vertices were moved up and down.
 
  and so i moved all vertices up or down, left and right, in a side view and in a top view to obtain the main shape.
 
   
 
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