Make sure that it dries out as much as possible, then carefully fold or roll it up and place it into a tightly sealed zip-lock bag.
The shed will dry out and become brittle in about a week, there is no way to stop this... but there are ways to preserve sheds...
The method I stated above will keep them intact but you must be careful with them...
There is also this option, though I do not know how the logistics work out seeing that you are in Canada
http://jkrgear.com/grips.php
Check out all the cool stuff they can do with the sheds... I can't wait to get an iPhone case made from my Dumeril's Boa's shed (once she is big enough)
The sheds will add up fast, I have an entire box full of them already lol