I tried to replace the screen on my iPhone 6s and now it won't turn on. Any ideas?

I tried to replace the screen on my iPhone 6s and now it won't turn on. Any ideas?

Added (1). I know you are supposed to turn the phone off when replacing the screen but I couldn't since the screen was shattered and the lcd didn't work anymore. I took the screen off and the phone was still getting notifications. When I get the new screen on the phone won't come on anymore. What parts of the phone can I check that would cause this problem?

Obviously, you caused the problem, or didn't correctly fix the problem, when you did the repairs. Only you can figure out what you did. Maybe it's actually turning on but the screen isn't working. Check your work. Do it over again.

Now it will probably cost you more to get it fixed. Take it to professionals at the Apple store, I wouldnt attempt fixing anything on mine.