I took lessons from Nick Lodge when I was in Atlanta and when he is going to roll a small amount of fond or gum paste he uses corn starch with a light hand. If you are going to roll a large amount, to cover a cake, if you don't own a mat, you can put a very light amount of shortening on your counter. By a light coat I mean just so it looks like a sheen. Your fondant will roll out so much more easily. Let us see your cake please, post a photo.