As I have shown before Mirror Shoe DIY, but for this particular look you would use broken glass instead of the pre-cut squares. Enjoy :)
What you need:
1 pair of shoes (I found my pair on clearance at UO for 9.99)
Craft Square Glass mirrors at Joanns or Michaels
(come in two different sizes use one or both)
Hot Glue Gun
1. Plan your pattern, you need to make sure all of the spacing between the mirrors fits perfectly and there is no idle edge since you cannot cut the mirrored pieces. To do this you can use som scotch tape for a temporary adhesion.
2. Plug in your glue gun and go!
Things to think about...
My shoes had a leather strap and the glue gun worked but if I moved around in them too much the top layer of leather would peel off and the mirror was gone... To avoid this try a synthetic material for your shoes. Also beware of the stringing of the glue form the glue gun this can make a huge mess and stick to the mirrors and make for tedious clean-up.