Goto http://www.timelinemoviemaker.com/ authorize it to access your Facebook account. [ You need not worry much, as this app is from Facebook itself. ]
It will then fetch all the pics from your timeline and create a nice video out of it.
You can change the audio and remove some of the pics and redo the film with some simple clicks.
Later with a click of SHARE link, you can share it with your Facebook friends.