Sketching the head of a character or subject at an angle. The top down view is not that common but may be useful when drawing a character at a table in a restaurant for example. The key thing here is understanding the shape of the skull as a whole and foreshortening of the facial features.
![Avatar](https://cdn.statically.io/img/i.pinimg.com/140x140_RS/31/84/f5/3184f5f95a0faafe291f4f8caed86bab.jpg)
N.E.L