Sketchup Model 2- in Development

The first sketchup model I did was a very odd 2D model that I created in my first attempt at using sketchup. By advice of my tutor, I decided not to further evolve it, as the main problem was that I could not project my original 2D sketch into a 3D model on Sketchup- I was too inexperienced with Architectural design.

I think now, I have some sort of grasp with my designing skills- I feel though, they are still unsatisfactory, but I hope I can gain more skills once we proceed to Experiments 2 and 3.

My model is based on this sketch, where the top is "Compose" (Stradivari) and the bottom is "Durable" (Kimura)

The Skecthup Model holds some similarities with the original plan, such as the Z formation in the form of the ramps. I deviated away from this original plan slightly, as the 2D image did not have a definite middle ground and above ground area. I have yet to put in the sand box so as to show what is underground and what is above. I am also having some issues with the materials within my model, and I will complete that soon.