No expert here but I have recently bettered my form with the help of moebow.
A tip id like to throw out while doing blank bale, close your eyes. Yeah its scary at first but you shouldn't be that far back from the bale. Look before you draw, but close your eyes as soon as you are ready. let your body tell you what's right with the tips in mind.
Your not drawing with your arm. back tension.
bring your draw to anchor, moebow points this out in a video, almost like your trying to move your shoulder blade around your spine.
don't over draw but keep putting some tension in your back and when you release relax your hand and the little tension you have in your forearm from gripping the string and your hand should slide past your ear or follow through more and to your shoulder. If your hand is coming away from your face, your forcing the release, this is where my problem is.
Hope some of this helps.