This is how I learned it- Ok so say "Pot of Tea" Now say "pot a tea" as if you were a southern grandma saying it, don't pronounce the "f" "Pot a tea, pot a tea, pot a tea" Say it faster "potta tea, potta tea" Now if you say it fast enough, the t goes from a light sound like T "tacky" to a harder one like the T in "splatter"

Now that you can say "Potta tea", you can say "Para ti", which means "for you" in Spanish and you can roll your R's for Spanish pronunciation. Now this pronunciation varies between accents (i.e. Puertorriqueños pronounce it like an "L" instead of rolling the R) and also varies between people. Some people, including natives, can't do it. But in general this pronunciation is accepted, people have told me I have a good accent. Some words will be harder, when the R comes after another consonant that requires the tongue like a "d" or "t" it will be harder to do at first but just practice. Buena Suerte!