Hello, this is another one of those, so, This time, i'll be pulling off this olschool trick; the popping out of the screen ruler, 'what does it do?' well, as i said before in previous animations, i've said that, the ruler's for perspectives and such, may and will be your friends, and this one isnt different at all, it can help you make corridors, rooms, and depth, they can ease your life up. this animation is going to be continuable so you can study on what've drew on this :)