I've been on lots of film sets. I've produced films and written films and been around, so it wasn't my first rodeo in terms of that stuff. Nothing particularly surprised me, I have to say. I came in and I enjoyed the first day and I enjoyed the last day.

I don't want to sound arrogant and say that I know everything about directing and I've got it cracked, but it was just all in all a joyous experience. To me, the key to directing, to be honest, is just surround yourself with brilliant people and let them do their thing

So, as opposed to getting people in to read the script and read scenes with me, what I wanted to do was sit down and chat to these people and just say, "Okay. Do you share my sense of humor? Do you understand what this film is getting at? Do you know the tone that we're trying to get to?" And it was interesting.

I learned that I enjoy directing a lot more than I enjoy writing, which is interesting, because writing is lonely and infamous basically.

To me, there was an interesting movie to be made about two people who had been on that whirlwind romance and what happens after the fairy tale wedding. And this thought coincided or coalesced when I was at a wedding of a friend who got married to somebody that literally everybody in the congregation thought that you definitely should not get married to. This was the worst idea either of you have ever had.

My casting process was slightly different and slightly interesting insofar as I knew everybody could act. That's something you've seen. You know people can. You've seen them on the screen and you think either they're a good actor or a bad actor. So that's not the point. What I wanted to do was find people who I thought would have a similar comic sensibility.

I know what I want. I try and convey that at the beginning and set that out, but within those parameters, I'm very happy for them to experiment and try things and give it a go. To me, it's important.