iPhone 6+ screen replacement, now a few things won't work.

Hey guys,

I'm an amateur but I decided to replace my iPhone 6+ screen myself. After doing this my Touch ID doesn't work, my front facing camera doesn't work, and when I'm on the phone with someone I can't hear them unless I put the phone on speaker. When placing the front facing camera, do I have to remove the circular plastic that surrounds the front camera from my old screen onto my new one? And there's a square one surrounding another hole on the front of the screen. Also, apparently the guide I followed to replace the screen did not describe how to remove the home button properly, therefore I may have damaged the Touch ID but I do not understand how I would have because I was very careful. Any suggestions would be super helpful!

Thank you,

Nehemie