This was my first attempt at making a battlemap and was done per a request in the 'Mapmaking Requests' forum. I learned a lot about battlemaps doing this.
The image here has the doors in place but they come as objects in the map pack so they can be positioned however you like and even rotated as players open them. (At least in MapTools they can)
“When it’s over and you look in the mirror, did you do the best that you were capable of? If so, the score does not matter. But if you find that you did your best you were capable of, you will find it to your liking.” -John Wooden