I recently ran across some great tutorials that explain banjo rolls and fingerpicking techniques that we can utilize because of our re-entrant ukulele tuning.
If you've ever struggled with getting your banjolele to sound more like the banjo and less like the lele, it probably all comes down to technique. Give this video a look and learn these finger picking patterns to take things to the next level.
Then practice like crazy until you develop the muscle memory and speed required to shred bluegrass style!