Please post a pic of your proposed building, where you want the doors etc., and maybe the site and it's orientation.
Posting pics here is a bit different than other sites. You go to your gallery, create and album if you don't have one already, and upload the pic to that album. Then you go to that pic in your album and there is a button to post the picture code into your post.
When you start a new post, start writing it and leave your cursor where you want the pic to be. Then in a separate tab, open the gallery, your album, and your picture. Then you can hit that post pic in post button. The code will appear in the post. Go back to the post you were writing, and finish your post. If you have multiple pics, you may want to put a space between by putting a return or two between the picture codes. You may want to do that so they look better in the post.