Gather your new home button bracket, gasket

VERY CAREFULLY remove old gasket from home button. We use ESD tweezers to do this very slowly and accurately as to not break the home button

If you don't have a replacement gasket, don't worry. Don't remove gasket from home button. Instead you will use new tesa tape or a bit of glue to adhere the gasket to the new digitizer

While doing this, make sure to not rip, tear, or otherwise break the home button flex cable. This will cause irreparable damage to the touch ID and home button