This model is still listed as one of the beginner's projects, but I did find it a bit more challenging than the previous ones. Also, I first folded it with transparent paper, and I didn't like the effect as much. And then there remains the question - which is back, and which is front? I prefer this side of the model, for a front view check http://www.flickr.com/photos/30755467@N04/3284221806/.
Paper: 19.5cm square of stiff paper, 115gsm