In all honesty there wasn't much to do however I did come across a few problems with the roof of my model, the main reason was because it sloped at different angles and in different positions. So I did end up spending a few more hours trying to figure out how I could do this within Revit.
A few hours later I did manage to produce a roof (shown in image above) and this was the furthest I could get. I didn't really want to spend too much time as I have loads of other work to do to for my pin-up. However once I do have time I will pend it trying to fix the roof and completing the rest of the model.
I also made a few changes to the South elevation, I created a curtain wall system which I wanted as this would allow natural light to penetrate through the workshop areas.