Mark the picks with lines that show how deep you can go in that part of the screen. This will help keep you from accidentally hitting the fragile screen
Well written guide. Followed it and successfully replaced the battery on my Pixel XL. Be patient when removing the screen and just take your time. Also it helps to mark the picks with lines to show how deep you can go with the picks to cut through the glue. That will help keep you from accidentally damaging the screen.