Ha, yeah I actually downloaded all our facebook pictures together with a chrome extension, then used BeFunky Collage Maker to make the big picture. Then I added a slow pan for dramatic effect!
Keep in mind that goes to an affiliate link, clean link is just https://www.amazon.com/gp/product/B015PIIGQ6/
Also keep in mind that is just a reduction in the price Amazon US sell it at, it is already at a low price on the likes of the UK store:
https://www.amazon.co.uk/MAGIX-Movie-Edit-2016-Plus/dp/B013WER4FO/
As a last point, this is the old version of the software (if you can't tell by the 2016 in the title)
This was taken before the grade and audio being done properly. It's on Amazon Prime here