Promote website on social media

I want my e Christmas card video to be promoted on social media. Its unique, nothing like this exists.
You can send the animated video of the popular carol My Twelve Days of Christmas - you can sing along with it!
And send a personal message to the one you would want to send.

Just go to mytwelvedaysofchristmas.com , try it and you would know what I mean. Can you promote it on social media?
Let me have your ideas. Thank you.