I'm a perfect packer. I'm at least a perfect "selector". My wife actually puts the stuff in the cases (except carry-on). I am not allowed to pack anything because it will end up coming out looking like a prune.
I may try my best but in 30 years I have yet to master "wrinkle free packing". I can gently and diligently pack and it still wrinkles. Yes: I use the dry cleaner bags, tissue paper and I've tried the rolling method but alas no good.
It seems my wife just sticks the stuff in and it comes out looking great. It is frustrating.