I have added strips of mountboard to add height in the attic and then added faschia strips on the exterior to strengthen the added walls and allow something for the roof to butt against. Here is a picture of it so far, without the roof.
This pic is just to show the main bedroom. A shelf unit will fit in that corner where there is no wallpaper (to the left of the pic).
The last pic shows the lounge room. I covered over the transom over the door, as with the transom and door frame, I wouldn't fit cornice, so I will cut off the transom frame from the door frame and then I can have cornice!
And all the best for a fantastic 2011!