Here is a link to a card that the scrapbooking forum moderator Stitch did:
Most pattern paper have a white core (inside) like these papers do, but most cardstock are the same color inside and out.
One thing I always have to remind myself is to make sure I rip in the right direction so that the cool looking ripped side is on the side of the paper I want showing. You might have to do a test first. Also, I would recommend ripping before you attach any pictures or elements on the paper. I have had problems before with the rip ending closer to the elements than I wanted them to be. Not ripping too fast is also helpful in this area.