Question: A few more questions, since the plan doesn’t show any doors are we supposed to add them? And what is this big rectangle at the back of the house supposed to represent?
Response: Yes, you should add some doorways to the project. Focus your work on organizing your files, precision and accuracy rather than complexity in your design. Be sure to refer to the pictures to identify items in your plan. I believe that item is actually a reflecting pond and that actually it is only on the large side of the supporting wall. The plans may not reflect perfectly the built conditions.