Clean your shoes of any dirt

Paint the back of the heel (optional)

Google 'leopard print' and zoom the picture.
1)Make big splotches of any light shade of colour
2)Surround it with dark splotchy dots ( 3-4 looks best)
3)Fill the space inbetween with black splotches

Spray with vernix (or any clear waterproof sealant)

Et voila!