How do I come out to my christian parents about me being neopagan?

I'm not a very traditional pagan. I don't really believe in gods and goddesses, but I do believe in spiritual beings around me, and I do like to live my life in tune to nature, I believe in the holidays such as Yule (though I also celebrate Christmas and Thanksgiving), etc. My parents are pretty reasonable Christians, they aren't the insane fanatic type, and they know I'm not a christian, but I'm afraid that once I tell them I'm a a pagan they will jump to conclusions.