Hi, I'm new here and I wanted to send some fan letters but I live in Canada and the letters are going to the states and one to london and I was wondering how many Internation Reply Coupons to include in each letter if anybody can help me please do cause I've never sent a fan letter before and I want...

Hi, I'm new here and I wanted to send some fan letters but I live in Canada and the letters are going to the states and one to london and I was wondering how many Internation Reply Coupons to include in each letter if anybody can help me please do cause I've never sent a fan letter before and I want...