Pronunciation is a movement that changes the resonance of sounds in your throat and mouth.
How should we effectively practice English pronunciation, which is far from that of Japanese?
First, get used to the English rhythmic pattern. Then, start your physical movement practice, like moving your chin, tongue, lips, throat, etc.
Without these steps, learning won’t be as effective. Let’s focus on what differs a lot from Japanese pronunciation.
Set priorities to practice. Practice from the sounds that are most frequently used or those with considerable differences from Japanese.
Repeat this vocalization over and over. Then, you will gradually see how you tend to pronounce words.
It may sound odd, but knowing how you speak your native tongue is the key to acquiring a second language.