I’ll answer in 2 ways, long term and short term.
Long term, it’s about developing pitching earlier. This means moving on from coach pitch earlier and encouraging girls to pitch earlier. Walks are no fun, but also an absolutely necessary phase of development pitcher development. Also, young...
I would suggest that drills may not be the silver bullet with beginners and may be detrimental for many kids. Instead, focusing heavily on patterns of movement and intention would be best, imho. However, it is important to begin with posture, balance, and grip.
With beginners, most of mine are...