One way I found to be the easiest to learn a particular language or accent is to try and mock it. Usually, you should watch some videos or shows where a character from that particular region gets stereotyped to no end, and try to make fun of that same kind of people with the same kind of vibe.
It's not so easy, but with enough exposure you may get the hang of it. Remember, an accent isn't just how your mouth moves, it's also about the kind of person you are. Southern Hospitality isn't just a meme, the accent heavily reflects the kind of straight to the point, laid back person a Southerner can be, compare it to a chilled out Valley Dude accent.