Any advice on impersonating sounds?

Question: Any advice on impersonating sounds!?

Books , dvds suggestions , or your own advice would be greatWww@QuestionHome@Com

Best Answer - Chosen by Asker:

I love impersonating sounds!.
Practice foreign sounds!. Rolling your Rs can help with some sounds!.
Grumble from the back of your throat if you can!.
Move your tongue and mouth a lot, even more than necessary!.
Feel your throat when making different sounds!. Sometimes recognizing the vibrations helps!.
Um, I can't think of anything else!.!.!.Www@QuestionHome@Com