I highly recommend the DVD: "
Sally Collins Teaches You Precision Piecing"
You can buy it on her website:
http://www.sallycollins.org/orderform.html
...but my local library has a copy that I can check out whenever I want. You might see if your library has a copy.
If you are a member of The Quilt Show, you can see it on their website:
https://thequiltshow.com/watch/curre...cision-piecing