One way to practice your American English pronunciation is to rehearse. This is what I 
mean.
Before going into a situation where you know you will be conversing with native English speakers, predict how the conversation might proceed. Depending on the context you should be able to anticipate many of the words and phrases that you will need to say.
Review those words and phrases in your head or even write them down. Rehearse the conversation by yourself or make a recording that you can listen to. Use a checklist to remind yourself of the pronunciation features that you are trying to change.
Holding a rehearsal may seem simple but it is a very effective way to practice the pronunciation features you are working on.
If you are not sure what aspects of your pronunciation are contributing to your accent you need to consider an Accent Assessment. Getting an assessment will tell you the specific pronunciations that YOU need to work on in order to improve the way you speak.
Tags: accent assessment, Accent Reduction Techniques, American English Pronunciation
