To open it up I lifted one corner, inserted my flat spudger slightly and moved it around to pop the tabs. I didn't take off the screen and just used my wireless speaker and a rubber band to have the screen at 90 degrees. Then the white strips snapped right away even at a low angle. So i used my hairdryer while covering the rest of the back of the phone with aluminum foil. Then I butchered the battery trying to take it out but it didn't catch on fire and burn my house down so I guess it went OK. Of course I also didn't have tweezers so putting on the Touch ID bracket wasn't great.
Before putting the phone together I turned it on and tried Touch ID but it didn't work the first time while presses did. So I reseated the cable before having to take it apart and putting the bracket on again.
That was fun without tweezers :)