I love these shoes.

These shoes. What can I say? I fell hard for them. They were sold out for a while, and I kept searching any website that sells Jeffrey Campbell and they were no where to be found. Finally, LuLus put them back in stock and they were on their way to me. ONE PROBLEM, they are slightly too big. I waver between a 6.5 and a 7, my Jeffrey Campbell unicorn shoes are 7s, so I thought they were a safe bet in the 7. I thought I could make due but it is a little too big, and I walk a little funny. Any suggestions what to do? My main problem is that I feel like my arch doesn't touch the shoe at all and so it's as if I'm walking on my tippy toes all night. Please help, I love them too much and dropped a little bit more than I should have on them to let them go to waste.