Robert Pattinson says the role of Edward Cullen in 'The Twilight Saga' movies has been the hardest part he's played

In an interview with The Guardian newspaper, he explained: "I think Twilight's probably the hardest part I've done because to do it for five movies, it's really hard to think of stuff that's maybe not boring. Especially if you don't die. Because what's the drama? You're not scared of anything! And that's the whole essence of drama: life and death."

Pattinson - who can currently be seen in Australian crime film 'The Rover' - recalls having a particularly traumatic first day on the set of the first 'Twilight' film.

He said: "It just didn't feel right for ages. And then there was this one little thing - I had this make-up in my teeth, and it kept rubbing off all the time. It was really putting me off - it meant I had to keep redoing scenes.

"So I started trying to do this thing where I covered my teeth with my lips. And it changes your voice a little bit, but I thought, 'Oh, that's really cool!' And after that I started speaking in this (accent). It's so silly, it's so stupid! I was just kind of making the accent up, I don't even know what state it is really."

Since 'The Twilight Saga' wrapped Pattinson claims he has been finding it difficult to unearth scripts that match his acting talents and has tentatively begun writing his own stories.

He said: "I was trying to write a play the other day and I showed it to my assistant and didn't quite realise how bad it was.

"I was writing it totally by myself in the middle of the night thinking, 'This is how you do it! You just stay up all night and keep writing!' She came in the next morning and I'd been up all night writing.

"I said to her, 'You have to read this! It's amazing!' And then she said, 'It's not in English ... and half the time you haven't even put the character names in so it's just a stream of consciousness."