I was a drummer..
TS,to make your drum roll skill perfect.
Just start from the slow like 1--2--1--2--1--2--1--2
after you have master the 1st level,you move on
1-2-1-2-1-2-1-2-1-2-1-2-1-2
(Remember,don't hold the drumsticks tightly coz if you did,the drumstick wont bounce up)
after that, 1212121212121212121212121212121212
and from there u can drum roll..
Or maybe
4 seconds in each beat and move on:
1--2--1--2--1--2--1--2--1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1212121212121212121212......
Legend:
1 = Right
2 = Left
1st level:
4 seconds = Every 1(Right) hit is 1 sec= Example: (1) 2 (1) 2 (1) 2 (1) 2
2nd level:
4 seconds = Every 1(Right) of 2 set is 1 sec= Example: (1) 2 1 2 (1) 2 1 2 (1) 2 1 2 (1) 2 1 2
3rd level:
4 seconds = Every 1(Right) of 3 set is 1 sec= Example (1)21212(1)21212(1)21212(1)21212
1 2 = 1 set
1 2 1 2 = 2set
121212 = 3set
Dont think of other things..