"I guess when I first started speaking with an American accent, there's a tendency to create a caricature of the accent because you just exaggerate the pieces that stand out to you"

This quote by Radha Mitchell speaks to the suggestion that when a person initially starts speaking with an American accent, they might overemphasize specific facets of the accent in order to develop a caricature of it. This is likely due to the fact that when someone is first learning a brand-new accent, they concentrate on the pieces that attract attention to them one of the most. This can cause an overstated version of the accent, which might not be accurate. This quote is a suggestion that it requires time and also practice to learn a brand-new accent which it is important to be conscious of not overemphasizing certain aspects of the accent. It is likewise a suggestion that it is necessary to be patient and to take the time to discover the nuances of the accent in order to be able to speak it properly.