Power off your dryer and unplug it.
Slide the lint catcher out of the dryer and remove the screws in the lint compartment.
Insert the tip of your putty knife under one corner of the top panel of the dryer. Pry up the panel to pop the internal clip.
Insert the tip of your putty knife in the opposite corner of the top panel and pop the panel up.
Locate the wiring harness behind the dryer front panel and unplug the wiring.
Remove the screws from the rear of the front panel and remove the front panel from the dryer.
Fit a new front panel in the old one's place and replace the wiring and screws.