You’ve learned a lot about pronunciation here. Now you need to find good examples of American English on the web to practice listening comprehension, imitation, and to use for Ben Franklin exercises. There are lots of options on the internet, but I have two I like to recommend:
ted.com — this site has videos of various lengths on all sorts of topics. There is a good chance you will be able to find some that relate to your field of work or study. They have subtitles in many languages, and many have interactive transcripts.
pbs.org — this site is home to the Public Broadcasting Service, or national public television station. They have closed captioning, and also lots of children’s programming. Wonderful if you want to watch TV in English with your children!
Praat — Voice Analysis Software — in several of my videos, I use Praat to study different aspects of the voice. This is a free download.
As you know, we offer premium 1-on-1 accent reduction lessons here at Rachel’s English. However, if you want lessons in grammar, test prep, or business English, I’d like to recommend italki.com. They have teachers of various levels, each choosing their own price so you can find the right match for your financial needs.