Oneshot

we can put the lights on the bottom of the mirror so you can see from that angle then

i found a video to help you picture it better (https://youtube.com/shorts/ZD_34DxW_uI)

it really isnt that difficult

sliding lights: it depends on the bulb but i imagine it would easy to see move

arrows: i dont know why you think they would point fowards or backwards they would just towards the side youre on or not

sliding light or arrows