I just made a RKT lightning McQueen covered in MMF for a cake topper to be used on 6/29/13. I also used icing images but they cracked and i obviously had issues with the tires .What is the best way to store it as my house can get a little warm from time to time. Is it ok to store in the freezer? or Fridge ? This is my first time making a cake topper out of RKT .