Tutorial: How to share apartments in the gallery for the upcoming City Life

Hi just to tell you how I add doors to apartments.
I just take/delete 1 piece of the room where I want the door, then I put 1 piece of wall either outside or in the middle of the room, wall cover each side to match then put in the door, lift the piece of wall with door into where you deleted the piece. I do this with all rooms and it works fine. :) You can of course use double doors and arches, just do as above with 1/2 wall pieces needed.