What happens when you try? Error message(s)?
New country as in App Store/iTunes Store region?
You need a zero account balance and you need to cancel all your subscriptions. If you have cancelled all subscriptions, but some haven’t expired, contact iTunes Support. You need a credit card issued by a bank in the country the store is in, and you need a billing address in that country. If you have an account balance, either buy something more expensive and pay the balance with a credit card or contact iTunes Support and ask them to zero balance your account.
Purchases - View, change, or cancel your subscriptions.
Purchases - Subscriptions not billed through Apple
Region - Change your iTunes Store, iBooks Store, or App Store country or region.
If necessary, contact iTunes Support.
iTunes Support – world wide
Or did you try Settings/General/Language & Region and set the Region to Canada?