Watch a lot of English movies and T.V. shows and listen to English music. This will help the accent to settle into your brain.
The easiest accent to imitate is standard American so aim for that and of course speak to Native English speakers if you can :D
Talking with native speakers is the best way to learn languages I think
Hello, Candy. You can certainly improve your language, both pronunciation and vocabulary, with the "Language Tai-chi method" by N.Zamyatkin. You won't need any partner for the a year or so but your own efforts only. Then you will be able to start speaking English to anybody. Read the short description of the method here: https://yadi.sk/d/mx8AJGQDRABa8 and watch the feedback by Nurbol, one of his student, on youtube: https://youtu.be/F6UH0hsGQpM
Well, in that case, you should contact a native English speaker.He/she can teach you the actual accent of in English conversation.All the best:)