"I had done Shrek as a Canadian and I'm very proud to be Canadian, but I knew I could give more to it"

Mike Myers is revealing his pride in being Canadian and his appreciation for the chance to bring his character, Shrek, to life. He is acknowledging that he was able to bring something special to the function since of his Canadian heritage. He is indicating that he had the ability to bring a special point of view to the character that he wouldn't have been able to if he wasn't Canadian. He is likewise expressing his appreciation for the opportunity to bring his character to life and to be able to share his Canadian heritage with the world. He takes pride in his Canadian roots and is happy for the opportunity to reveal it off.