YAML code for customize.yaml to change the device class of the secondary switch (gives it the correct icon):

binary_sensor.garagedoorsv_switch2:

  device_class: garage_door

YAML code for the display overview. This makes a large clickable button and the large icon will also change depending if the sensor sees that the door is open or closed.

cards:
  - entity: binary_sensor.garagedoorsv_switch2
    icon_height: 200px
    name: Press to Open/Close Garage Door
    show_icon: true
    show_name: true
    tap_action:
      action: call-service
      service: switch.turn_on
      service_data:
        entity_id: switch.garage_door
    type: button
  - entities:
      - entity: sensor.garage_door_status
      - entity: switch.garage_door
      - entity: binary_sensor.garagedoorsv_switch2
    type: glance
type: vertical-stack