What is the strumming pattern for Taylor Swift's song Mary's Song?

I'm not an expert on guitar chords or anything, so don't get mad if I'm wrong, but I mess around with Taylor Swift chords all the time and I play it: down down down down up up down down up down up. It works pretty well like that. The strumming pattern of songs isn't easy to do perfectly though, and usually just ends up being the way you think sounds best with the song. Hope this helps!