Great question!
There are a few ways you can help improve your Spanish pronunciation. One caveat though- how you want to improve your pronunciation depends on which type of Spanish slang you are studying (i.e. if you are studying with an Argentine Spanish speaker, their pronunciation is going to be slightly different and faster than that of studying with a Spanish speaker from Spain or Mexico.
- Start speaking more Spanish in your day-to-day life around people you know. Even if you are worried about the words or grammar not being 100% correct, people are willing to help you and correct you if you ask to practice.
- If you do not know anyone or do not have anyone you feel comfortable speaking with, you can download AI tutoring apps like Praktika or Babbel. These apps have AI tutors that specifically focus on conversational Spanish, similar to a Duolingo style. They evaluate your current ability, then give you targeted "lessons" to get you talking right away. Along the way, they will give you pronunciation advice and you can change the settings to an advanced mode so they will also check your grammar as you talk.
- You can also watch Spanish TV channels, listen to Spanish music/podcasts, or watch your favorite movies with Spanish audio. That way, you can hear how the words sound while you process the language through reading the subtitles in English (or you can do both Spanish audio and Spanish subtitles to get the full experience of the language).