Superman's sense of space
Developing your X-ray vision!
This is a good lesson in how to make sense of the shapes in a still life. It is amazing how easy it is to forget the shape of an object when it is hidden or obscured by another. Half a bottle might not even meet the other half properly because we all get very involved in different parts of our drawing without looking at the drawing as a whole. It's useful to imagine you have X-ray eyes so you get the proportions of each object correct.
The example shown is simple and white to demonstrate the idea more clearly.
