Update: plugging the phone to my USB port in order to perform DFU reset caused it to reboot and start up. So, kudos to the author and editors of the guide!
Just completed the disassembly and the replacement of the screen up to Step 13 in reverse order (starting from the bottom of the guide). I am now attempting to power up the device, but it won’t come on. Any idea what I may have done wrong?
If you were using some form of screen protector, it may come off first as soon as you pull on the suction cup. Do not be alarmed. That is normal behavior.
In addition to safety goggles, I would recommend you also wear good gloves to avoid getting cut with the glass as you try to pry it open.