I am looking to imitate a picture from a baptism invite which is a cross and make it into a mold, but HOW????
Okay, this may sound really stupid, but - It's just on paper - you can't make a mold from paper, right????
Actually, you can make a mold over paper. If your paper object has good detail, you can apply Seal-Dit to seal the paper and then apply silicone plastique or silicone spread over it to make a mold.
Go To: http://www.makeyourownmolds.com/dits
You can read up on Seal-Dit nad look at some tutorials on how to use it.
Hope This Helps,