I have read Harry Potter and the Philosopher's Stone nine times and my brother Ben, who is 10, has read it five times. When I heard that there was going to be a film I was really worried that it wouldn't be anything like I had imagined it. But I needn't have been so worried. I spent the first 20 minutes noticing some of the things they had missed out but then I decided just to sit back and enjoy it.

What was amazing was how much the actors looked like the characters. I thought Hermione looked exactly right, though my brother thought she was too pretty. She was really funny and incredibly bossy. Ron was a bit chubbier than I expected but his face was perfect. I did wish though that Harry's hair stuck up a bit more.

I particularly loved all the things in the classrooms. It was great to finally see how they looked but a shame they kept jumping from one scene to another. When you're reading the book you have time to enjoy all the tiny details - like the food in the feasts or the details on the wizard cards. In the film it rushes by.

I can't believe I'm feeling this but I think the problem with the film was that they kept too close to the book. The director has thrown in a little bit of everything which meant some of the atmosphere of the book was lost because important scenes were too short. Norbert, the baby dragon, was only in it for a minute and he is one of my favourite characters. Maybe it would have been better to cut out a few things altogether and let some of the other scenes run on a bit longer.

At the end we all cheered and I wondered when I would get to see it again. I don't think I'll watch it nine times, but it will certainly be one of my favourite films.