If the late Richard Burton (a Welshman-married to Elizabeth Taylor) can be taught to speak so beautifully then there’s hope for us all.
LOL. Richard Burton. (The Klansman) He along with so many other of his peers who meet what amount to a "brick wall" in acting. All those Brits who do such an amazing job imitating a generic American dialect.
Yet when they attempt Southern dialects, most of them fell on their faces. Including some held in very high esteem, such as actor James Mason. (Mandingo)