Press x to progress on to the next step. don't press it to fast or it won't work!
I've been thinking about it and I think scratch should have a way to get achievement on projects and share them with others, which is one reason why I invented the Scratch Center( similar to Game Center From Apple). This project explains a little bit about Scratch Center and what it's meant for. For more info, Checkout this forums post: http://scratch.mit.edu/discuss/topic/6925/?page=1#post-44121