Hi there I know the contest rules for the YOMD mail in contest states that you need to mail them a 3.5 x 5" postcard. I am from Canada and cannot find this size anywhere. Can I just cut up some index cards and place them in an envelope or will they just throw these out? Has anyone tried this? I already spent 50 cents per post card and it will cost 97cents plus tax to mail them to the U.S.from here. So if I spend that much on postage I would like to make sure they will not throw them out. There is no special postcard rate in Canada. Thank you