They do not highlight the part that needs to be removed from the new screen, this should be added as the part looks and feels like it is a part of the new screen and removing it could break the new screen. So make sure you remove the selfie screen camera cover even if it looks and feels like there is not one there, it's there.
Reconnecting the display port cable was the longest part of my first repair. It helped when I carefully folded the ribbon connector at each end to get the most length out of it and bent it into the proper shape to hover just right over the small port. I lightly bent the cable back at the base and at the connector end.
This connector feels delicate, so it definitely made me take my time and be cautious. The snap is unmistakable, but be careful afterward as you're on a short leash again. I folded the new screen closed like a book and snapped it into place easily.
I also felt that the cable was too short to fully open like a book, however it is possible that the hinge side of my screen was still pressed in to the adhesive and I did not properly open the screen or I was being overly cautious. Be careful on first approach either way.