You don't appear to have a Flash player installed on your computer. Don't worry: just follow this link to download a plugin for your web browser — then come back to this page to view the animation!
Wait for the demo to load, then click ‘Start’
Click on the decorations that appear from the box to choose a decoration, then click on the Christmas tree to place the decorations.
When you’re done you can print out your decorated tree — or start all over again!