improve my english ACCENT !

Hello , is there any native english speaker around who actually knows good tricks to get as close as possible to english accent ? I am french, so you can foresee the problem, although I m not a living caricature either. In exchange, I could help you with your french (spoken, or written), or introduce you to non turistic parts of paris, or teach you how to sing out of key....many possibilities really, so don't hesitate to contact me if you are british (I apologize but I need to learn british accent) All the best !
Tchaï