remove all plastic or aluminum covering the cork.
put the bottle into the shoe (like in the picture) and hit the bottle with the heel of the shoe against the wall (repeatedly). Better use two hands ;)
NOTE: you WILL spill a bit of wine once the cork comes out so do this outside.
there is no step two. you're done. congrats! enjoy your wine :)
note: don't blame me if you were to break a bottle eventhough this shouldn't happen. have fun!