I never pay too much attention to pronunciation since I learned English, one of the reasons why I didn't care was because I thought "If I can understand people whose learning Spanish despite their pronunciation, English speakers should understand me as well" but since I traveled to US, I discovered the opposite of that thought.
Despite my accent, people understood me very well, but there were certain words that have a specific pronunciation which gave me in return weird faces from those who were hearing me. In these situations, I didn't know who felt more ashamed, if me for the fact I didn't know how to pronounce the word correctly or them because they feel bad because they couldn't understand me, those situations stressed me a lot, but we have to know that when we are learning we don't have to be ashamed of trying, because those failures will let us learn and get better at it.
Knowing 2 languages is a must in these days, technology and social media let us connect with any person around the world and the most spoken languages are Spanish and English. People admire those who put effort into learning about other cultures, and when they discover they can communicate and talk with you, they feel really pleased, same do I when I see an US native trying to speak to me in Spanish.
How do I practice my pronunciation?
During that trip to US was easier because I had native English speakers who could correct me and taught me the way to pronounce the word correctly. But after I returned home it got harder because I couldn't speak English with people around here.
Youtube videos
Are a great way to practice, there are a huge amount of videos where we can correct our pronunciation. I subscribed to 2 accounts that have helped me improve my pronunciation a lot EnglishClass101 and Aprender Ingles Americano.
Enter to Discord servers
Is another way to practice what you've learned, when I have free time, I practice my English with other users. It is normal to feel shy at the beginning, but bear in mind that no one knows you, and they don't care.
So, take a breath, count to 10 and just say Hi!
Sing!
this is something I always do when I am alone at home. For example, I like Imagine Dragons and Linking Park a lot, so I just search the lyrics and start singing. It's very useful for understanding the meaning of the song and it helps your listening as well.
I have been with these 3 things since I came back from the US and it has helped me a lot, hopefully it will help you too in your journey.
Just try it!