We have had Canadian's in the past participate. All in all it will cost you about CA$20 in postage each way give or take a few bucks. It least that was what it cost the last time we had Canadian participation.
We have a template that some of us use, and others don't. It is a bit like a check list of things you might want to tell us about the print you have submitted. Of course you can say as much or as little as you like it is entirely up to you. I will get your email and send it out.