I redrew the whole autocad file again, this took a lot longer then I would of liked it to take, I though it would of taken an hour or so but it took around 5 hours as I had to also add in additional features like dimensions and a title block. By redoing the CAD drawing I didnt only learn my lesson to follow instructions, but I was able to become very familiar and rapid with all the commands and shortcuts within Autocad.
I then carried on working on my sketchup adding more detail such as the ceiling, creating the window frames and the doors. I started experimening with different textures on surfaces and it was great watching the Barcelona pavillion come to life. I decided to import some pieces of furniture from the Sketchup warehouse and play around with moving them about, its amazing how many different things you can import from the Sketchup Gallery.