Just click the green flag, preferably turbo. It does take quite a long time, so be patient. Don't watch if you're in a rush. At first it looks like a big bunch of circles - well it kinda is - but nearer the end it looks a bit like a flower :D
Thanks for watching everyone! This is the first time I have ever used the pen blocks, and I'm quite proud;3 I'm going to practise drawing like this more so that I can make better things.