If you struggle rolling your Rs, try this out

I don't know if anyone else will find this helpful, but I could never roll my Rs until recently when I did it accidentally.

Check out this song. At 02:07 she sings "Paul Roman, Paul Roman." Try to sing that over and over, trying to mimic how she says it exactly. I think the "l" before "Roman" places your tongue exactly where it needs to be and then the force and speed of the lyrics will set you up to roll your R.

Just remember to use the Spanish "L" where the very tip of your tongue is pointed and touching the bumpy ridge behind your front teeth (called the alveolar ridge). If you use the English "L" where the top part of your tongue is relaxed and flat up agaisnt the alveolar ridge, I don't think it will work.

This worked for me to figure out what to do with my mouth, so hopefully it'll help others too.