One word: don't. It will only end up sounding like garbled mockney. What do you think is going to happen then? We'll still know your american, you'll just look like an idiot.
London is very forgiving to tourists, believe, i live here. Just stay the way you are, you'll be fine.
Plus, english lads/girls are fascinated by american guys/gals...
Whether you can speak a foreign language without an accent (that is an accent foreign to that language) is almost a question of luck. Few people are able to speak a foreign language without an accent. Of course you can learn to pronounce the words properly, but that is not the same thing. It is a bit like playing the piano - some people do it badly no matter how much they practice, some people ge
I am very talented with accents, but I have had to accept the fact that I am getting older and the ability to imitate an accent is diminishing. I am a native speaker of standard mid-western American English (considered to be accent free in the US). I speak Spanish with several regional accents, due to spending summers as a child in Mexico with relatives, then I lived 12 years in Miami and devel