I have the same creases. Given the nature of the fabric and the natural folds going up and down, I don't know how to get around it. There are lots of products that will protect the top. Do a search on the forum for some that have been highly recommended. I keep my roadster in the garage and not exposed to the elements too often. I've owned 5 convertibles, and as much as I was saddened with the death of our cat, I tell you this, they are not good for one's cloth top. I had to get a zap mat to keep the cat off my car but somehow he managed to get his paws on the windshield...

I guess that's another topic...