All of us learn symbols for things in childhood, and think we know what a human face or a cat's face looks like, or a human eye, or a hand, or an arm, etc etc...
But as soon as these things are seen from a different angle, e.g foreshortened, we stop looking at the actual ( strange ) shape in front of us and tend to draw our own symbol instead. The foreshortened version seems too difficult, too odd.. ( although of course it is correct.)
This explains the tendency to draw a human face with the eyes too high up and the nose too long, when in fact the eyes should be half-way down the face:
In other words, on the left the artist has drawn an incorrect symbol learnt in the past, not what is there.
because the artist has learnt a symbol for an eye or nose and draws it willy-nilly, regardless of what is there!
Also, as soon as things are seen from a different angle, e.g foreshortened, we stop looking at the actual ( strange ) shape in front of us and tend to draw our own symbol instead. The foreshortened version seems too difficult, too odd.. ( although of course it is correct.)
e,g,Drawing a hand without foreshortening the fingers which should be pointing towards you:
the artist has drawn what he or she thinks a finger ought to look like.
Drawing an arm or a leg without the foreshortening it needs: here the artist has drawn his or her symbol instead of what is actually seen:
Drawing an eye from the front when drawing a profile: ( ie. drawing a learnt symbol for an eye, instead of what the eye actually looks like from the side ):
Top Art Tips to avoid distortion include:
1) Turn the photo and your drawing upside down and continue drawing - your brain will be unable to " correct" the strange but accurate shapes you are seeing.
2) Grid your photo and your drawing - this constrains the proportions. The more squares in your grid, the more accurate your drawing.
3) Measure by using your pencil as in lesson 3 - compare the width and height of a figure, or a vase, for example. Or how many times does the head go into the whole figure? or into its width? etc.
4) Draw horizontals and verticals to compare your angles against.
5) Half-close your eyes as you look at the model and then draw only the silhouette ( e.g of a foreshortened arm or hand or leg) and then complete the details afterwards.
6) Look at your drawing in a mirror- this reveals distortions.