This has always worked for me:
• Take the decal sheet out of the box and put it in a plastic envelope. Store the envelope in a dry place.
• Take the body out of the box, and put a foam block inside (this way, the body won't loose it's shape). I store all the bodies in a big plastic container under the bed.
(Usually, the body of the kit applies pressure to the part trees).
I hope this helps!
