After seeing MaryK's lovely turquoise patent heels I ordered a pair for myself but unfortunately they are a half size too large (and sold out in the half size down, boo). They fit my feet and do not slide off, but the back sticks out about a quarter inch (my heels always fit snugly against the back of my feet). And I am fairly sure they won't stretch beyond the size they are now as the patent is fairly stiff. I'm currently at work so I can't get any photos but if it's necessary I can do so at home.

Do you gals have any advice on how I can make these fit so the back is snug or should I just return them? *crossing fingers!*