Try going on line to packlight.com. They have instructions for packing all kinds of stuff in your suitcase without anything getting wrinkled. Just follow the instructions they give you. I tried it when my husband and I went on a cruise a couple of years ago, and it worked for me. DH decided to do it "his way, " and his stuff was wrinkled and my was perfect. Just read the instructions carefully and you should be okay.
Carnival Triumph - December 2003
Carnival Glory - March 2005 (can't wait)