I dropped my iPhone and it fell flat on the glass screen.
The repair was alot easier than I thought it would be. You just need the right tools. Plus it does help to watch the video ifixit has on there website a few times.
The two main things I can recommend is. 1. Take the phone apart over a large bowl. Sounds silly I know but I did that and I did drop two very tiny little screws from the phone and the bowl caught them. If you drop those tiny screws on the floor, good luck finding them! 2. I used a magnetized 00 Phillips screw driver to reassemble the phone. Beats the !&&* outta tryin to pick up those tiny screws and get them threaded in the holes without needing tweezers or somethin.