At 3:33 – in the video, you should have all those creases formed (marked out in black dashes in the video). Align your in-progress model similar to that in the video. At 3:38, a rabbit ear fold is made along the existing creases. Once done, fold the flap (which sticks out) in the direction shown in the video. the next steps are similar and follow the same technique. You can have a look at the diagrams here – http://www.prospero78.freeserve.co.uk/diagrams/oridiag.htm – check out the Links to ‘Image 1′ and ‘Image 2′ at the top of the page. I hope it helps you!