Press the green flag. Do not the press the space button or the arrow keys the slides change on their own. I love this DIY and I have tried it out myself its really simple and I would definitely recommend it. I have been wanting to do another tutorial for ages and I finally got round to it.
The reason I called them popsicles is because, that's what most people call them, but here in the UK we call them ice lollies, so I'm sorry for any confusion.
