7 - Lost and Found Contour

Now for a little magic! With Lost and Found Contours the focus of the composition is obscured heavily by shadows. However, thanks to the lines in the composition the mind will "fill in the gaps" of what is missing.

Notice how the only thing you see of the form in the back is his partially obscured face and the outline of his glove on the candle. However your mind will begin to fill in what you can't see. You see the full form of the figure in the back, now you see it, now you don't!