Theres a lip on the right side that goes under the frame, and another lip that goes under the nfc antenna where you need to slightly turn the nfc antenna a bit to get the left side of the shield away.

The pointy tweezers in the ifixit kit are easier to work with the shield than the ones pictured here.

Hair dryer on low took about 25 minutes directly blasting on the device, then used the ifixit metal spudger blade with rubber handle in the velcro kit pack

When reassembling and prior to gluing the screen, turn the device on with all components attached. Verify screen function, button function, nfc function, and HR monitor function.