Visit the WorldBookDay2012 Channel on YouTube for directions on how to enter, but basically, it involves making a brief (1-2 minute) video of your favourite storyteller doing their thing and entering it! The winner will be crowned World Book Day's Storytelling Superstar 2012 in March. So get busy! The competition closes on 13th of February.
Here's Cressida Cowell to tell you all about it!