Remember the movie Mary Poppins and the chalk drawings Bert drew that you could just jump into? These are incredible real life chalk drawings from London street artist John Beever.
Having the proper perspective is very important in art, just as it can be in real life. This picture was taken from the wrong angle.
The same drawing but from the correct angle...
Now scroll back up to the one from the wrong perspective. That long colored smear is her leg! Consider how he had to think from a totally different perspective from this one to communicate with us. Amazing!