Sounding "native" whether it's General American English or something else, is often a long path for a "foreigner".
The easiest start is to find a good accent reduction and pronunciation coach to have the initial assessment and understand your unique path.
Unfortunately one often finds that even the basic vowels you think you had nailed down might be "wrong" and have to be corrected in order to have an easily understood and enjoyable articulation.
For a long time I couldn't even hear a difference between IPA [i] and [ɪ]. It took a few weeks to properly recognize and replicate them in English.
Comments
Sounding "native" whether it's General American English or something else, is often a long path for a "foreigner".
The easiest start is to find a good accent reduction and pronunciation coach to have the initial assessment and understand your unique path.
Unfortunately one often finds that even the basic vowels you think you had nailed down might be "wrong" and have to be corrected in order to have an easily understood and enjoyable articulation.
For a long time I couldn't even hear a difference between IPA [i] and [ɪ]. It took a few weeks to properly recognize and replicate them in English.
Couple of my favorite resources: https://www.youtube.com/channel/UC-MSYk9R94F3TMuKAnQ7dDg https://www.youtube.com/user/rachelsenglish/videos https://www.youtube.com/channel/UCv8YBYZ2s_imUC3H84FwVFQ