Painting depends upon seeing; seeing depends upon looking for this or
that, at least in great part it does so.
Think of and look at your work as though it were done by your enemy. If
you look at it to admire it you are lost.
Any man, as old Heatherley used to say, will go on improving as long as
he is bona fide dissatisfied with his work.
Improvement in one’s painting depends upon how we look at our work. If
we look at it to see where it is wrong, we shall see this and make it
righter. If we look at it to see where it is right, we shall see this
and shall not make it righter. We cannot see it both wrong and right at
the same time.