Anything I could write about the subject wouldn't fit in this answer, so your options are:
- find other video's or tutorials or instructions (youtube is your friend for video's)
- find a repair shop to do it (they might not prefer to use the screen you bought yourself_
I am there for help. I have bought my Samsung Galaxy S7 about one year, but I have broken the screen carelessness last week, i have bought a screen from Amazon and want to replace it by myself, is there any guide help me do it? I just found a guide from here blog.rewatechnology.com/s7-edge-glass-only-repair-guide-and-repair-training/ , but I found it is too difficult any other easy ways? Thanks so much.