Cross picking a backward roll on the mandolin is a great way to develop right-hand skills. Cross pick a backward roll on the mandolin with the expert music training tips in this free video from a mandolin instructor.
The backwards roll, one. Okay, so that's the pattern. Low, middle, high, low, middle, high. Sorry, sorry, sorry. High, middle, low. High, middle, low, low, high. With the metronome on two and four. Three, three, four.