In the words of Coach Aaron MacIntyre of @advantage_gymnastics_academy …
I do this technique/drill with the girls so they understand how much and how long they need to keep the shoulders to remain open and push chest forward before tapping and dismounting. I also have them snap them to bar so they understand the strong kick it requires to get a good shape over the bar on giants and for dismounting!

Hope this helps you and your athletes create their Best Darn Gymnastics!