Look at this sketch.  Can the person who did this draw?

What about the person who did THIS?

There are folks who might see these and dismiss them as absurd, saying things like "my three-year old can do better than that."  The irony here is that these two artists were willing to capture their initial ideas as if coming from a child.  Untainted, non-rationalized, pure visual and perceptive response to whatever caught their interest and wouldn't let go.  

The most inhibiting thing we do as artists is censor ourselves, constantly judging every mark we make, often holding back on some "far out" idea, fearful of being found lacking by fellow artists, afraid of losing clientele.  We cling too tightly to what feels safe.  But really, only when we can let go and respond without judgment can our full creative potential sprout forth.