Not really that corny or crazy to be honest. I know of British actors and others who can perfectly nail a Americanized voice and their dialect because they've been exposed to the Hollywood movies growing up. Which is why American actors trying to mimic British accents often sound like a parody since they are not exposed to British movies and the such as much as the other.This is corny advice, but I think it's useful for anyone trying to learn another language. Try to consume entertainment from the country the language is from. This can be books, video games, movies, TV shows, or even songs. If you're like me and don't have anyone to practice with, absorbing any part of the culture can give you the motivation to keep going. It also helps you get used to the culture's sensibilities and common beliefs.
My dad is from Taiwan and he’s been in the US for about 50 years and he doesn’t have an Asian accent. He’s very fluent in English which is interesting as he had to learn the language after moving to the US. He can also read and type in English.Not really that corny or crazy to be honest. I know of British actors and others who can perfectly nail a Americanized voice and their dialect because they've been exposed to the Hollywood movies growing up. Which is why American actors trying to mimic British accents often sound like a parody since they are not exposed to British movies and the such as much as the other.
So it'd make sense that learning a language through other means of entertainment could help to.