Eigonodo (Deep throat) method
This is an English pronouncing method to pronounce from the deep throat when speaking in English, which says that, on the contrary when speaking in Japanese, we Japanese don't pronounce much from the throat. I read two books on this method and took personal lessons for three hours from the author of the books. Those lessons gave me many useful tips in English.
I'm trying to speak in English in accordance with this method, but am not well enough to attain an ideal pronunciation. Thus, I've been practicing reading aloud English articles in public. And I stored them openly on the web, so that I could be more careful in pronunciation.