I am glad to have seen John Green involved in the production of it and also the cast looks very promising. Plus, it has Ansel Elgort in it, so it can't go too wrong. For that reason, I'm more worried about humiliating myself by the wailing tears I know will be running down my cheeks the whole way through, than if I'll like the movie or not – of course, I'm terrified it will ruin the book for me and millions of others, but the book is such a classic, I don't think anyone or anything could possibly ruin it. Therefore if John Green says the movie adaptation of TFIOS is good (as he has repeatedly done), I trust him with that too.

I trust him to break my heart, to make me laugh and to leave me wanting more. As the movie starts to hit the big screens all over the world, what are you most worried and excited about? What might be done well or (sharp intake of breath) even better than the book? Or will it be a cheese-filled flop? We asked mega fans of the book, all members of the Guardian children's books site, to share their dreams and nightmares as this much treasured novel is turned into a film… We've gone through it with The Hunger Games, Twilight, Divergent and even Harry Potter, and now it's the turn of John Green's book The Fault in Our Stars.

The fault in our stars movie studio