Billy Bob Thornton has admitted that he was nervous when he started working on Puss In Boots.
The actor the character of Jack for the first Puss In Boots spin off movies but it was a new experience for the actor and he reveals that he did feel intimidated.
Speaking to The Press Association the actor said: "I was very nervous doing this because you're by yourself and you're not in the real environment, it's very different to what I'm used to doing.
"I was intimidated because I've never done one of those big animated films.
"I had a great time and I think next time I'll be more relaxed."
The movie sees Antonio Banderas return to the role of Puss, set before we see the character in the Shrek movies.
Salma Hayek and Zach Galifianakis have also lent their voices to the movie.
Puss In Boots is released 9th December.
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