My first professional audition - god, I've never told anybody about this - was for a test commercial, I think it was for Xbox. It involved me getting kidnapped by a granny who wanted to play the Xbox. It was very weird and I definitely had no idea what I was doing. I actually got the gig. It wasn't a commercial; it was what directors did when they wanted to show the company what they would do with a commercial.

There's something great about being a really young actor because you don't have a chance to be nervous. You don't know anything yet. Whereas one of the big challenges as you go through - I've been doing acting professionally for 10 years now - is to not let all the things that you know hold you back and make you more nervous. Once you've had a few people tell you that they don't like your ideas, that voice in your head can creep in that says, "Don't tell them what you think."

My grandfather told me that I should have a series of headshots, one with a tennis racket, one dressed as a naval officer, and one dressed as a cheeky chappie. He said, "If you have those headshots, the world is your oyster."

Once you get an agent you're given an opportunity to try a little bit more. It's a really long ladder.

I can think of a handful of auditions where the director has literally said, "That is the opposite of what I think." But it's really good to be honest and have that dialogue. I don't think you should be criticized though.

I made films with my brothers and my cousins and if any of the films ever come to fruition my career will be in ruins because the acting, writing, and directing is so unbelievably, heinously bad. We once screened one for my grandfather, this film that we had painstakingly made over a couple of days when we were all 10 years old, and he sat there and he said, "This is the worst film I've ever seen." No sympathy whatsoever.

I suppose it's really satisfying to play someone with secrets. It's really satisfying to decide how and when those things are going to start being revealed, and how subtle to be.