1. This is very difficult, you have to use much more strength than it appears and it's very easy to rip out the connector cords. Mine did not rip, thankfully.
2. Upon replacing the screen, I had to do this 3 times, I would not recommend putting the screws back in but turning on the phone and testing all screens before putting the panel back.
3. When I finally managed to ensure all displays were working, I was pushing the screen back in and cracked the glass just below the home button. This part is very sensitive as it is the thinnest portion of the glass so be careful and ensure you push from the top and go all the way around. I also had to do this twice because after cracking the glass on the first try, I also realised the top was not fully pushed back.