I am also not prescriptive about drills. I believe the best way to get better is to practice, and the best thing to practice is whatever you enjoy enough to keep you practicing longer! If that’s drills, I’ve provided you with worksheets to use. If it’s not, do whatever feels good. There are links to the drills worksheet, and the two brushes referenced in this video below.

Drills Worksheet
LL Drills
LL Dawn Glide