When in the game you are given the option to pick different worlds (Cars, Toy Story, etc). Pick one and then once in that "world" clap your hands and wait for the picture.
Once you've uploaded the 10 pictures to your friend feed, it goes by a lot faster. Once the picture is taken you can just pause and choose to change worlds. There are 6, so I cycled through all 6 worlds 3 times. EDIT
: According to Spilner in the comments, saving is not necessary.EDIT 2
: According to takuto neko:
You can also just do all the poses in the same world if you really like. Plus if you keep saving photos when you get close to 18 (if you decide to save them) you'll get a message telling you to delete a photo cause you've saved too many and it'll just remove one.